70644272 has 20 divisors (see below), whose sum is σ = 137323056. Its totient is φ = 35206080.

The previous prime is 70644269. The next prime is 70644311. The reversal of 70644272 is 27244607.

It is a super-2 number, since 2×70644272² = 9981226332819968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2123 + ... + 12074.

Almost surely, 2^70644272 is an apocalyptic number.

It is an amenable number.

70644272 is a deficient number, since it is larger than the sum of its proper divisors (66678784).

70644272 is a wasteful number, since it uses less digits than its factorization.

70644272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14516 (or 14510 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 70644272 is about 8405.0146936219. The cubic root of 70644272 is about 413.3890652102.

Adding to 70644272 its reverse (27244607), we get a palindrome (97888879).

The spelling of 70644272 in words is "seventy million, six hundred forty-four thousand, two hundred seventy-two".