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12372879880 = 2351409219533
BaseRepresentation
bin10111000010111101…
…10010101000001000
31011221021202102101101
423201132302220020
5200314424124010
65403425431144
7615416513044
oct134136625010
934837672341
1012372879880
11527a193869
12249379b4b4
13122249bbca
14855363024
154c637873a
hex2e17b2a08

12372879880 has 32 divisors (see below), whose sum is σ = 27858864600. Its totient is φ = 4945616896.

The previous prime is 12372879853. The next prime is 12372879931. The reversal of 12372879880 is 8897827321.

It can be written as a sum of positive squares in 4 ways, for example, as 9649918756 + 2722961124 = 98234^2 + 52182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53407 + ... + 166126.

Almost surely, 212372879880 is an apocalyptic number.

12372879880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12372879880 is an abundant number, since it is smaller than the sum of its proper divisors (15485984720).

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

12372879880 is a wasteful number, since it uses less digits than its factorization.

12372879880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220953 (or 220949 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 12372879880 in words is "twelve billion, three hundred seventy-two million, eight hundred seventy-nine thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 1409 2818 5636 7045 11272 14090 28180 56360 219533 439066 878132 1097665 1756264 2195330 4390660 8781320 309321997 618643994 1237287988 1546609985 2474575976 3093219970 6186439940 12372879880