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69990800 = 24521115907
BaseRepresentation
bin1000010101111…
…11100110010000
311212200220022212
410022333212100
5120404201200
610540051252
71506624545
oct412774620
9155626285
1069990800
1136565140
121b533b28
1311667599
14941cbcc
156228035
hex42bf990

69990800 has 60 divisors (see below), whose sum is σ = 183451056. Its totient is φ = 25449600.

The previous prime is 69990797. The next prime is 69990827. The reversal of 69990800 is 809996.

It is a super-3 number, since 3×699908003 (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3554 + ... + 12353.

Almost surely, 269990800 is an apocalyptic number.

It is an amenable number.

69990800 is an abundant number, since it is smaller than the sum of its proper divisors (113460256).

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

69990800 is a wasteful number, since it uses less digits than its factorization.

69990800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15936 (or 15925 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 69990800 is about 8366.0504421142. The cubic root of 69990800 is about 412.1104740352.

The spelling of 69990800 in words is "sixty-nine million, nine hundred ninety thousand, eight hundred".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 40 44 50 55 80 88 100 110 176 200 220 275 400 440 550 880 1100 2200 4400 15907 31814 63628 79535 127256 159070 174977 254512 318140 349954 397675 636280 699908 795350 874885 1272560 1399816 1590700 1749770 2799632 3181400 3499540 4374425 6362800 6999080 8748850 13998160 17497700 34995400 69990800