128825416 has 16 divisors (see below), whose sum is σ = 248076540. Its totient is φ = 62671680.

The previous prime is 128825407. The next prime is 128825423. The reversal of 128825416 is 614528821.

It can be written as a sum of positive squares in 2 ways, for example, as 128822500 + 2916 = 11350^2 + 54^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 217315 + ... + 217906.

Almost surely, 2^128825416 is an apocalyptic number.

It is an amenable number.

128825416 is a deficient number, since it is larger than the sum of its proper divisors (119251124).

128825416 is a wasteful number, since it uses less digits than its factorization.

128825416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435264 (or 435260 counting only the distinct ones).

The product of its digits is 30720, while the sum is 37.

The square root of 128825416 is about 11350.1284574228. The cubic root of 128825416 is about 505.0493903267.

The spelling of 128825416 in words is "one hundred twenty-eight million, eight hundred twenty-five thousand, four hundred sixteen".