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20254208260 = 22511137081891
BaseRepresentation
bin10010110111001111…
…101011000100000100
31221021112212101102111
4102313033223010010
5312440034131020
613145445550404
71314626633566
oct226717530404
957245771374
1020254208260
118653a774a0
123b13115404
131baa261920
14da1d79336
157d8231d5a
hex4b73eb104

20254208260 has 48 divisors (see below), whose sum is σ = 49969829952. Its totient is φ = 6798614400.

The previous prime is 20254208251. The next prime is 20254208263. The reversal of 20254208260 is 6280245202.

It is not an unprimeable number, because it can be changed into a prime (20254208263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3538086 + ... + 3543805.

It is an arithmetic number, because the mean of its divisors is an integer number (1041038124).

Almost surely, 220254208260 is an apocalyptic number.

20254208260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20254208260 is an abundant number, since it is smaller than the sum of its proper divisors (29715621692).

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

20254208260 is a wasteful number, since it uses less digits than its factorization.

20254208260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7081924 (or 7081922 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 20254208260 in words is "twenty billion, two hundred fifty-four million, two hundred eight thousand, two hundred sixty".

Divisors: 1 2 4 5 10 11 13 20 22 26 44 52 55 65 110 130 143 220 260 286 572 715 1430 2860 7081891 14163782 28327564 35409455 70818910 77900801 92064583 141637820 155801602 184129166 311603204 368258332 389504005 460322915 779008010 920645830 1012710413 1558016020 1841291660 2025420826 4050841652 5063552065 10127104130 20254208260