128931070 has 16 divisors (see below), whose sum is σ = 232747200. Its totient is φ = 51423264.

The previous prime is 128931059. The next prime is 128931119. The reversal of 128931070 is 70139821.

It is a super-2 number, since 2×128931070² = 33246441622689800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14982 + ... + 21961.

It is an arithmetic number, because the mean of its divisors is an integer number (14546700).

Almost surely, 2^128931070 is an apocalyptic number.

128931070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128931070 is a deficient number, since it is larger than the sum of its proper divisors (103816130).

128931070 is a wasteful number, since it uses less digits than its factorization.

128931070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37299.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 128931070 is about 11354.7818120825. The cubic root of 128931070 is about 505.1874218555.

The spelling of 128931070 in words is "one hundred twenty-eight million, nine hundred thirty-one thousand, seventy".