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87975396 = 22341931461
BaseRepresentation
bin1010011111001…
…10010111100100
320010112121120000
411033212113210
5140010203041
612421341300
72115531015
oct517462744
9203477500
1087975396
1145729243
1225567830
13152c3562
14b98100c
157acbbb6
hex53e65e4

87975396 has 120 divisors (see below), whose sum is σ = 250440960. Its totient is φ = 26827200.

The previous prime is 87975367. The next prime is 87975397. The reversal of 87975396 is 69357978.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (87975397) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 190606 + ... + 191066.

It is an arithmetic number, because the mean of its divisors is an integer number (2087008).

Almost surely, 287975396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87975396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125220480).

87975396 is an abundant number, since it is smaller than the sum of its proper divisors (162465564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87975396 is a wasteful number, since it uses less digits than its factorization.

87975396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 516 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 87975396 is about 9379.5200303640. The cubic root of 87975396 is about 444.7545606089.

The spelling of 87975396 in words is "eighty-seven million, nine hundred seventy-five thousand, three hundred ninety-six".

Divisors: 1 2 3 4 6 9 12 18 19 27 31 36 38 54 57 62 76 81 93 108 114 124 162 171 186 228 279 324 342 372 461 513 558 589 684 837 922 1026 1116 1178 1383 1539 1674 1767 1844 2052 2356 2511 2766 3078 3348 3534 4149 5022 5301 5532 6156 7068 8298 8759 10044 10602 12447 14291 15903 16596 17518 21204 24894 26277 28582 31806 35036 37341 42873 47709 49788 52554 57164 63612 74682 78831 85746 95418 105108 128619 149364 157662 171492 190836 236493 257238 271529 315324 385857 472986 514476 543058 709479 771714 814587 945972 1086116 1157571 1418958 1543428 1629174 2315142 2443761 2837916 3258348 4630284 4887522 7331283 9775044 14662566 21993849 29325132 43987698 87975396