70638832 has 80 divisors (see below), whose sum is σ = 156847104. Its totient is φ = 30782400.

The previous prime is 70638811. The next prime is 70638833. The reversal of 70638832 is 23883607.

It is a junction number, because it is equal to n+sod(n) for n = 70638791 and 70638800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70638833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660123 + ... + 660229.

Almost surely, 2^70638832 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 70638832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78423552).

70638832 is an abundant number, since it is smaller than the sum of its proper divisors (86208272).

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

70638832 is a wasteful number, since it uses less digits than its factorization.

70638832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 70638832 is about 8404.6910710626. The cubic root of 70638832 is about 413.3784538557.

The spelling of 70638832 in words is "seventy million, six hundred thirty-eight thousand, eight hundred thirty-two".