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12870478320 = 24357173114537
BaseRepresentation
bin10111111110010001…
…11110100111110000
31020012222002001010020
423333020332213300
5202324320301240
65525043003440
7633641155260
oct137710764760
936188061106
1012870478320
11550505a947
1225b2369580
1312a15c2b5b
148a14917a0
15504dba0d0
hex2ff23e9f0

12870478320 has 320 divisors, whose sum is σ = 49841381376. Its totient is φ = 2679275520.

The previous prime is 12870478319. The next prime is 12870478331. The reversal of 12870478320 is 2387407821.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 878092 + ... + 892628.

Almost surely, 212870478320 is an apocalyptic number.

12870478320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12870478320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24920690688).

12870478320 is an abundant number, since it is smaller than the sum of its proper divisors (36970903056).

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

12870478320 is a wasteful number, since it uses less digits than its factorization.

12870478320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14608 (or 14602 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 12870478320 in words is "twelve billion, eight hundred seventy million, four hundred seventy-eight thousand, three hundred twenty".