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2942720 = 28511219
BaseRepresentation
bin1011001110011100000000
312112111122122
423032130000
51223131340
6143023412
734004234
oct13163400
95474578
102942720
11172aa00
12b9ab68
137c0571
145685c4
153d1db5
hex2ce700

2942720 has 108 divisors (see below), whose sum is σ = 8155560. Its totient is φ = 1013760.

The previous prime is 2942713. The next prime is 2942729. The reversal of 2942720 is 272492.

It is a self number, because there is not a number n which added to its sum of digits gives 2942720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2942729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154871 + ... + 154889.

22942720 is an apocalyptic number.

2942720 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 2942720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4077780).

2942720 is an abundant number, since it is smaller than the sum of its proper divisors (5212840).

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

2942720 is a wasteful number, since it uses less digits than its factorization.

2942720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2942720 is about 1715.4358046864. The cubic root of 2942720 is about 143.3011405376.

The spelling of 2942720 in words is "two million, nine hundred forty-two thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 11 16 19 20 22 32 38 40 44 55 64 76 80 88 95 110 121 128 152 160 176 190 209 220 242 256 304 320 352 380 418 440 484 605 608 640 704 760 836 880 968 1045 1210 1216 1280 1408 1520 1672 1760 1936 2090 2299 2420 2432 2816 3040 3344 3520 3872 4180 4598 4840 4864 6080 6688 7040 7744 8360 9196 9680 11495 12160 13376 14080 15488 16720 18392 19360 22990 24320 26752 30976 33440 36784 38720 45980 53504 66880 73568 77440 91960 133760 147136 154880 183920 267520 294272 367840 588544 735680 1471360 2942720