128472308 has 12 divisors (see below), whose sum is σ = 232079232. Its totient is φ = 62163960.

The previous prime is 128472293. The next prime is 128472317. The reversal of 128472308 is 803274821.

It is a super-4 number, since 4×128472308⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517910 + ... + 518157.

It is an arithmetic number, because the mean of its divisors is an integer number (19339936).

Almost surely, 2^128472308 is an apocalyptic number.

It is an amenable number.

128472308 is a deficient number, since it is larger than the sum of its proper divisors (103606924).

128472308 is a wasteful number, since it uses less digits than its factorization.

128472308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036102 (or 1036100 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 128472308 is about 11334.5625411835. The cubic root of 128472308 is about 504.5875245095.

The spelling of 128472308 in words is "one hundred twenty-eight million, four hundred seventy-two thousand, three hundred eight".