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12087885948 = 2231039779843
BaseRepresentation
bin10110100000111111…
…01000000001111100
31011012102111020012120
423100133220001330
5144223444322243
65315245202540
7605356222665
oct132037500174
934172436176
1012087885948
115143329696
122414260450
1311a8426448
1482957836c
154ab330c83
hex2d07e807c

12087885948 has 24 divisors (see below), whose sum is σ = 28478905728. Its totient is φ = 3990175536.

The previous prime is 12087885947. The next prime is 12087885991. The reversal of 12087885948 is 84958878021.

It is a super-2 number, since 2×120878859482 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12087885891 and 12087885900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12087885947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4888686 + ... + 4891157.

It is an arithmetic number, because the mean of its divisors is an integer number (1186621072).

Almost surely, 212087885948 is an apocalyptic number.

It is an amenable number.

12087885948 is an abundant number, since it is smaller than the sum of its proper divisors (16391019780).

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

12087885948 is a wasteful number, since it uses less digits than its factorization.

12087885948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779953 (or 9779951 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 60.

The spelling of 12087885948 in words is "twelve billion, eighty-seven million, eight hundred eighty-five thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 12 103 206 309 412 618 1236 9779843 19559686 29339529 39119372 58679058 117358116 1007323829 2014647658 3021971487 4029295316 6043942974 12087885948