70857256 has 8 divisors (see below), whose sum is σ = 132857370. Its totient is φ = 35428624.

The previous prime is 70857229. The next prime is 70857263. The reversal of 70857256 is 65275807.

It can be written as a sum of positive squares in only one way, i.e., 52794756 + 18062500 = 7266^2 + 4250^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4428571 + ... + 4428586.

Almost surely, 2^70857256 is an apocalyptic number.

It is an amenable number.

70857256 is a deficient number, since it is larger than the sum of its proper divisors (62000114).

70857256 is a wasteful number, since it uses less digits than its factorization.

70857256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8857163 (or 8857159 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 70857256 is about 8417.6752135016. The cubic root of 70857256 is about 413.8040878776.

It can be divided in two parts, 7085 and 7256, that added together give a palindrome (14341).

The spelling of 70857256 in words is "seventy million, eight hundred fifty-seven thousand, two hundred fifty-six".