70008172 has 12 divisors (see below), whose sum is σ = 131938576. Its totient is φ = 32311440.

The previous prime is 70008143. The next prime is 70008209. The reversal of 70008172 is 27180007.

It is a happy number.

It is a super-2 number, since 2×70008172² = 9802288293563168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673104 + ... + 673207.

Almost surely, 2^70008172 is an apocalyptic number.

It is an amenable number.

70008172 is a deficient number, since it is larger than the sum of its proper divisors (61930404).

70008172 is a wasteful number, since it uses less digits than its factorization.

70008172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346328 (or 1346326 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 70008172 is about 8367.0886214979. The cubic root of 70008172 is about 412.1445670442.

Adding to 70008172 its reverse (27180007), we get a palindrome (97188179).

The spelling of 70008172 in words is "seventy million, eight thousand, one hundred seventy-two".