70128285 has 16 divisors (see below), whose sum is σ = 114108480. Its totient is φ = 36767360.

The previous prime is 70128241. The next prime is 70128299. The reversal of 70128285 is 58282107.

It is not a de Polignac number, because 70128285 - 2¹⁶ = 70062749 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38736 + ... + 40505.

It is an arithmetic number, because the mean of its divisors is an integer number (7131780).

Almost surely, 2^70128285 is an apocalyptic number.

It is an amenable number.

70128285 is a deficient number, since it is larger than the sum of its proper divisors (43980195).

70128285 is a wasteful number, since it uses less digits than its factorization.

70128285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79308.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 70128285 is about 8374.2632511762. The cubic root of 70128285 is about 412.3801378099.

The spelling of 70128285 in words is "seventy million, one hundred twenty-eight thousand, two hundred eighty-five".