70081872 has 40 divisors (see below), whose sum is σ = 206909376. Its totient is φ = 20023296.

The previous prime is 70081867. The next prime is 70081883. The reversal of 70081872 is 27818007.

It is a super-2 number, since 2×70081872² = 9822937566048768, which contains 22 as substring.

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, 103953 + ... + 104624.

Almost surely, 2^70081872 is an apocalyptic number.

It is an amenable number.

70081872 is an abundant number, since it is smaller than the sum of its proper divisors (136827504).

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

70081872 is a wasteful number, since it uses less digits than its factorization.

70081872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208595 (or 208589 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 70081872 is about 8371.4916233608. The cubic root of 70081872 is about 412.2891425559.

Adding to 70081872 its reverse (27818007), we get a palindrome (97899879).

The spelling of 70081872 in words is "seventy million, eighty-one thousand, eight hundred seventy-two".