70512144 has 40 divisors (see below), whose sum is σ = 183872160. Its totient is φ = 23282688.

The previous prime is 70512133. The next prime is 70512149. The reversal of 70512144 is 44121507.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (70512149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1729 + ... + 12000.

It is an arithmetic number, because the mean of its divisors is an integer number (4596804).

Almost surely, 2^70512144 is an apocalyptic number.

It is an amenable number.

70512144 is an abundant number, since it is smaller than the sum of its proper divisors (113360016).

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

70512144 is a wasteful number, since it uses less digits than its factorization.

70512144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13847 (or 13841 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 70512144 is about 8397.1509454100. The cubic root of 70512144 is about 413.1311799073.

The spelling of 70512144 in words is "seventy million, five hundred twelve thousand, one hundred forty-four".