70128502 has 16 divisors (see below), whose sum is σ = 111879360. Its totient is φ = 32853888.

The previous prime is 70128473. The next prime is 70128503. The reversal of 70128502 is 20582107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70128503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3283 + ... + 12289.

It is an arithmetic number, because the mean of its divisors is an integer number (6992460).

Almost surely, 2^70128502 is an apocalyptic number.

70128502 is a deficient number, since it is larger than the sum of its proper divisors (41750858).

70128502 is a wasteful number, since it uses less digits than its factorization.

70128502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9255.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 70128502 is about 8374.2762075298. The cubic root of 70128502 is about 412.3805631561.

The spelling of 70128502 in words is "seventy million, one hundred twenty-eight thousand, five hundred two".