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16494980 = 225824749
BaseRepresentation
bin111110111011…
…000110000100
31011001000212012
4332323012010
513210314410
61345313352
7260130215
oct76730604
934030765
1016494980
119346a17
125635858
133556c58
14229540c
1516ac605
hexfbb184

16494980 has 12 divisors (see below), whose sum is σ = 34639500. Its totient is φ = 6597984.

The previous prime is 16494943. The next prime is 16495001. The reversal of 16494980 is 8949461.

It can be written as a sum of positive squares in 2 ways, for example, as 2849344 + 13645636 = 1688^2 + 3694^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 412355 + ... + 412394.

It is an arithmetic number, because the mean of its divisors is an integer number (2886625).

Almost surely, 216494980 is an apocalyptic number.

16494980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16494980 is an abundant number, since it is smaller than the sum of its proper divisors (18144520).

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

16494980 is a wasteful number, since it uses less digits than its factorization.

16494980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824758 (or 824756 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 16494980 is about 4061.4012360268. The cubic root of 16494980 is about 254.5563476322.

The spelling of 16494980 in words is "sixteen million, four hundred ninety-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 824749 1649498 3298996 4123745 8247490 16494980