70428128 has 24 divisors (see below), whose sum is σ = 139595400. Its totient is φ = 34975360.

The previous prime is 70428121. The next prime is 70428143. The reversal of 70428128 is 82182407.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 70428094 and 70428103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70428121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2618 + ... + 12153.

It is an arithmetic number, because the mean of its divisors is an integer number (5816475).

Almost surely, 2^70428128 is an apocalyptic number.

It is an amenable number.

70428128 is a deficient number, since it is larger than the sum of its proper divisors (69167272).

70428128 is a wasteful number, since it uses less digits than its factorization.

70428128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14930 (or 14922 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 70428128 is about 8392.1468051983. The cubic root of 70428128 is about 412.9670312372.

The spelling of 70428128 in words is "seventy million, four hundred twenty-eight thousand, one hundred twenty-eight".