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72802998 = 23214812731
BaseRepresentation
bin1000101011011…
…10001010110110
312001222202221100
410111232022312
5122114143443
611120230530
71542546432
oct425561266
9161882840
1072802998
1138105a74
122046b446
13121105c8
1499519c2
1565d13d3
hex456e2b6

72802998 has 24 divisors (see below), whose sum is σ = 157904136. Its totient is φ = 24242400.

The previous prime is 72802987. The next prime is 72803011. The reversal of 72802998 is 89920827.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25293 + ... + 28023.

It is an arithmetic number, because the mean of its divisors is an integer number (6579339).

Almost surely, 272802998 is an apocalyptic number.

72802998 is an abundant number, since it is smaller than the sum of its proper divisors (85101138).

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

72802998 is a wasteful number, since it uses less digits than its factorization.

72802998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4220 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 72802998 is about 8532.4672867817. The cubic root of 72802998 is about 417.5576274332.

The spelling of 72802998 in words is "seventy-two million, eight hundred two thousand, nine hundred ninety-eight".

Divisors: 1 2 3 6 9 18 1481 2731 2962 4443 5462 8193 8886 13329 16386 24579 26658 49158 4044611 8089222 12133833 24267666 36401499 72802998