70428256 has 48 divisors (see below), whose sum is σ = 142502976. Its totient is φ = 34252416.

The previous prime is 70428223. The next prime is 70428287. The reversal of 70428256 is 65282407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229255 + ... + 229561.

It is an arithmetic number, because the mean of its divisors is an integer number (2968812).

Almost surely, 2^70428256 is an apocalyptic number.

It is an amenable number.

70428256 is an abundant number, since it is smaller than the sum of its proper divisors (72074720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70428256 is a wasteful number, since it uses less digits than its factorization.

70428256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 70428256 is about 8392.1544313722. The cubic root of 70428256 is about 412.9672814202.

The spelling of 70428256 in words is "seventy million, four hundred twenty-eight thousand, two hundred fifty-six".