70688432 has 40 divisors (see below), whose sum is σ = 144097920. Its totient is φ = 33546240.

The previous prime is 70688419. The next prime is 70688441. The reversal of 70688432 is 23488607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24944 + ... + 27632.

It is an arithmetic number, because the mean of its divisors is an integer number (3602448).

Almost surely, 2^70688432 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 70688432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72048960).

70688432 is an abundant number, since it is smaller than the sum of its proper divisors (73409488).

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

70688432 is a wasteful number, since it uses less digits than its factorization.

70688432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781 (or 2775 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 70688432 is about 8407.6412863537. The cubic root of 70688432 is about 413.4751842878.

The spelling of 70688432 in words is "seventy million, six hundred eighty-eight thousand, four hundred thirty-two".