70172392 has 8 divisors (see below), whose sum is σ = 131573250. Its totient is φ = 35086192.

The previous prime is 70172381. The next prime is 70172393. The reversal of 70172392 is 29327107.

It can be written as a sum of positive squares in only one way, i.e., 53963716 + 16208676 = 7346^2 + 4026^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (70172393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4385767 + ... + 4385782.

Almost surely, 2^70172392 is an apocalyptic number.

It is an amenable number.

70172392 is a deficient number, since it is larger than the sum of its proper divisors (61400858).

70172392 is a wasteful number, since it uses less digits than its factorization.

70172392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8771555 (or 8771551 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 70172392 is about 8376.8963226245. The cubic root of 70172392 is about 412.4665748245.

Adding to 70172392 its reverse (29327107), we get a palindrome (99499499).

It can be divided in two parts, 7017 and 2392, that added together give a square (9409 = 97²).

The spelling of 70172392 in words is "seventy million, one hundred seventy-two thousand, three hundred ninety-two".