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20125116 = 22321150821
BaseRepresentation
bin100110011000…
…1010110111100
31101212110110200
41030301112330
520123000431
61555203500
7333026544
oct114612674
941773420
1020125116
11103a6330
1268a6590
13422836b
14295c324
151b77ee6
hex13315bc

20125116 has 36 divisors (see below), whose sum is σ = 55497624. Its totient is φ = 6098400.

The previous prime is 20125109. The next prime is 20125117. The reversal of 20125116 is 61152102.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125117) by changing a digit.

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, 25015 + ... + 25806.

Almost surely, 220125116 is an apocalyptic number.

It is an amenable number.

20125116 is an abundant number, since it is smaller than the sum of its proper divisors (35372508).

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

20125116 is a wasteful number, since it uses less digits than its factorization.

20125116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50842 (or 50837 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 20125116 is about 4486.1025400675. The cubic root of 20125116 is about 272.0066138819.

Adding to 20125116 its reverse (61152102), we get a palindrome (81277218).

The spelling of 20125116 in words is "twenty million, one hundred twenty-five thousand, one hundred sixteen".

Divisors: 1 2 3 4 6 9 11 12 18 22 33 36 44 66 99 132 198 396 50821 101642 152463 203284 304926 457389 559031 609852 914778 1118062 1677093 1829556 2236124 3354186 5031279 6708372 10062558 20125116