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2390720 = 26531241
BaseRepresentation
bin1001000111101011000000
311111110110012
421013223000
51103000340
6123124052
726215013
oct11075300
94443405
102390720
111393202
12973628
13659237
1446337a
15323565
hex247ac0

2390720 has 56 divisors (see below), whose sum is σ = 5900928. Its totient is φ = 921600.

The previous prime is 2390711. The next prime is 2390723. The reversal of 2390720 is 270932.

It is not an unprimeable number, because it can be changed into a prime (2390723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9800 + ... + 10040.

22390720 is an apocalyptic number.

2390720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2390720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2950464).

2390720 is an abundant number, since it is smaller than the sum of its proper divisors (3510208).

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

2390720 is a wasteful number, since it uses less digits than its factorization.

2390720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 2390720 is about 1546.1953304806. The cubic root of 2390720 is about 133.7138021821.

The spelling of 2390720 in words is "two million, three hundred ninety thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 31 32 40 62 64 80 124 155 160 241 248 310 320 482 496 620 964 992 1205 1240 1928 1984 2410 2480 3856 4820 4960 7471 7712 9640 9920 14942 15424 19280 29884 37355 38560 59768 74710 77120 119536 149420 239072 298840 478144 597680 1195360 2390720