70131072 has 64 divisors (see below), whose sum is σ = 203232960. Its totient is φ = 21250560.

The previous prime is 70131049. The next prime is 70131091. The reversal of 70131072 is 27013107.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4078 + ... + 12525.

It is an arithmetic number, because the mean of its divisors is an integer number (3175515).

Almost surely, 2^70131072 is an apocalyptic number.

It is an amenable number.

70131072 is an abundant number, since it is smaller than the sum of its proper divisors (133101888).

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

70131072 is a wasteful number, since it uses less digits than its factorization.

70131072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16631 (or 16619 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 70131072 is about 8374.4296522211. The cubic root of 70131072 is about 412.3856005996.

Adding to 70131072 its reverse (27013107), we get a palindrome (97144179).

The spelling of 70131072 in words is "seventy million, one hundred thirty-one thousand, seventy-two".