70728052 has 6 divisors (see below), whose sum is σ = 123774098. Its totient is φ = 35364024.

The previous prime is 70728037. The next prime is 70728061. The reversal of 70728052 is 25082707.

It can be written as a sum of positive squares in only one way, i.e., 64705936 + 6022116 = 8044^2 + 2454^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8841003 + ... + 8841010.

Almost surely, 2^70728052 is an apocalyptic number.

It is an amenable number.

70728052 is a deficient number, since it is larger than the sum of its proper divisors (53046046).

70728052 is a wasteful number, since it uses less digits than its factorization.

70728052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17682017 (or 17682015 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 70728052 is about 8409.9971462540. The cubic root of 70728052 is about 413.5524191181.

The spelling of 70728052 in words is "seventy million, seven hundred twenty-eight thousand, fifty-two".