70390052 has 12 divisors (see below), whose sum is σ = 124082700. Its totient is φ = 34937856.

The previous prime is 70390049. The next prime is 70390069. The reversal of 70390052 is 25009307.

It can be written as a sum of positive squares in 2 ways, for example, as 38738176 + 31651876 = 6224^2 + 5626^2 .

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, 63677 + ... + 64772.

It is an arithmetic number, because the mean of its divisors is an integer number (10340225).

Almost surely, 2^70390052 is an apocalyptic number.

It is an amenable number.

70390052 is a deficient number, since it is larger than the sum of its proper divisors (53692648).

70390052 is a wasteful number, since it uses less digits than its factorization.

70390052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128590 (or 128588 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 70390052 is about 8389.8779490527. The cubic root of 70390052 is about 412.8925961706.

Adding to 70390052 its reverse (25009307), we get a palindrome (95399359).

The spelling of 70390052 in words is "seventy million, three hundred ninety thousand, fifty-two".