70913880 has 160 divisors (see below), whose sum is σ = 244371600. Its totient is φ = 18434304.

The previous prime is 70913873. The next prime is 70913881. The reversal of 70913880 is 8831907.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70913881) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 139066 + ... + 139574.

Almost surely, 2^70913880 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 70913880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122185800).

70913880 is an abundant number, since it is smaller than the sum of its proper divisors (173457720).

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

70913880 is a wasteful number, since it uses less digits than its factorization.

70913880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 70913880 is about 8421.0379407767. The cubic root of 70913880 is about 413.9142859728.

The spelling of 70913880 in words is "seventy million, nine hundred thirteen thousand, eight hundred eighty".