128263932 has 24 divisors (see below), whose sum is σ = 332536400. Its totient is φ = 42754608.

The previous prime is 128263913. The next prime is 128263979. The reversal of 128263932 is 239362821.

128263932 is a `hidden beast` number, since 12 + 8 + 2 + 639 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593707 + ... + 593922.

Almost surely, 2^128263932 is an apocalyptic number.

128263932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128263932 is an abundant number, since it is smaller than the sum of its proper divisors (204272468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128263932 is a wasteful number, since it uses less digits than its factorization.

128263932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187642 (or 1187634 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 128263932 is about 11325.3667490285. The cubic root of 128263932 is about 504.3145711935.

The spelling of 128263932 in words is "one hundred twenty-eight million, two hundred sixty-three thousand, nine hundred thirty-two".