128737275 has 12 divisors (see below), whose sum is σ = 212845752. Its totient is φ = 68659840.

The previous prime is 128737223. The next prime is 128737283. The reversal of 128737275 is 572737821.

It is not a de Polignac number, because 128737275 - 2¹⁵ = 128704507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858174 + ... + 858323.

It is an arithmetic number, because the mean of its divisors is an integer number (17737146).

Almost surely, 2^128737275 is an apocalyptic number.

128737275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128737275 is a deficient number, since it is larger than the sum of its proper divisors (84108477).

128737275 is a wasteful number, since it uses less digits than its factorization.

128737275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716510 (or 1716505 counting only the distinct ones).

The product of its digits is 164640, while the sum is 42.

The square root of 128737275 is about 11346.2449735584. The cubic root of 128737275 is about 504.9341808804.

The spelling of 128737275 in words is "one hundred twenty-eight million, seven hundred thirty-seven thousand, two hundred seventy-five".