70636928 has 32 divisors (see below), whose sum is σ = 141372000. Its totient is φ = 35155456.

The previous prime is 70636919. The next prime is 70636931. The reversal of 70636928 is 82963607.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29438 + ... + 31746.

It is an arithmetic number, because the mean of its divisors is an integer number (4417875).

Almost surely, 2^70636928 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 70636928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70686000).

70636928 is an abundant number, since it is smaller than the sum of its proper divisors (70735072).

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

70636928 is a wasteful number, since it uses less digits than its factorization.

70636928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562 (or 2550 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 70636928 is about 8404.5778002229. The cubic root of 70636928 is about 413.3747397529.

The spelling of 70636928 in words is "seventy million, six hundred thirty-six thousand, nine hundred twenty-eight".