70139904 has 60 divisors (see below), whose sum is σ = 187165104. Its totient is φ = 23363584.

The previous prime is 70139899. The next prime is 70139911. The reversal of 70139904 is 40993107.

It is a super-2 number, since 2×70139904² = 9839212266258432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48439 + ... + 49865.

Almost surely, 2^70139904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70139904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93582552).

70139904 is an abundant number, since it is smaller than the sum of its proper divisors (117025200).

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

70139904 is an equidigital number, since it uses as much as digits as its factorization.

70139904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458 (or 1432 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 70139904 is about 8374.9569551133. The cubic root of 70139904 is about 412.4029112183.

The spelling of 70139904 in words is "seventy million, one hundred thirty-nine thousand, nine hundred four".