70387912 has 96 divisors (see below), whose sum is σ = 165309120. Its totient is φ = 27941760.

The previous prime is 70387897. The next prime is 70387921. The reversal of 70387912 is 21978307.

70387912 = 78³ + 79³ + ... + 133³.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333487 + ... + 333697.

It is an arithmetic number, because the mean of its divisors is an integer number (1721970).

Almost surely, 2^70387912 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 70387912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82654560).

70387912 is an abundant number, since it is smaller than the sum of its proper divisors (94921208).

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

70387912 is a wasteful number, since it uses less digits than its factorization.

70387912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 70387912 is about 8389.7504134509. The cubic root of 70387912 is about 412.8884118714. Note that the first 3 decimals are identical.

It can be divided in two parts, 703879 and 12, that added together give a triangular number (703891 = T₁₁₈₆).

The spelling of 70387912 in words is "seventy million, three hundred eighty-seven thousand, nine hundred twelve".