128862495 has 20 divisors (see below), whose sum is σ = 230998680. Its totient is φ = 68726448.

The previous prime is 128862479. The next prime is 128862497. The reversal of 128862495 is 594268821.

128862495 is a `hidden beast` number, since 12 + 8 + 8 + 624 + 9 + 5 = 666.

It is not a de Polignac number, because 128862495 - 2⁴ = 128862479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 128862495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128862497) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 158685 + ... + 159494.

It is an arithmetic number, because the mean of its divisors is an integer number (11549934).

Almost surely, 2^128862495 is an apocalyptic number.

128862495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128862495 is a deficient number, since it is larger than the sum of its proper divisors (102136185).

128862495 is an equidigital number, since it uses as much as digits as its factorization.

128862495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318196 (or 318187 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 128862495 is about 11351.7617575423. The cubic root of 128862495 is about 505.0978407297.

The spelling of 128862495 in words is "one hundred twenty-eight million, eight hundred sixty-two thousand, four hundred ninety-five".