128901495 has 16 divisors (see below), whose sum is σ = 210631680. Its totient is φ = 67284384.

The previous prime is 128901481. The next prime is 128901523. The reversal of 128901495 is 594109821.

It is not a de Polignac number, because 128901495 - 2⁹ = 128900983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90715 + ... + 92124.

It is an arithmetic number, because the mean of its divisors is an integer number (13164480).

Almost surely, 2^128901495 is an apocalyptic number.

128901495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128901495 is a deficient number, since it is larger than the sum of its proper divisors (81730185).

128901495 is a wasteful number, since it uses less digits than its factorization.

128901495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182894.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 128901495 is about 11353.4794226264. The cubic root of 128901495 is about 505.1487912380.

The spelling of 128901495 in words is "one hundred twenty-eight million, nine hundred one thousand, four hundred ninety-five".