128540952 has 32 divisors (see below), whose sum is σ = 357058800. Its totient is φ = 42846912.

The previous prime is 128540941. The next prime is 128541001. The reversal of 128540952 is 259045821.

128540952 is a `hidden beast` number, since 1 + 28 + 540 + 95 + 2 = 666.

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

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, 297333 + ... + 297764.

Almost surely, 2^128540952 is an apocalyptic number.

128540952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128540952 is an abundant number, since it is smaller than the sum of its proper divisors (228517848).

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

128540952 is a wasteful number, since it uses less digits than its factorization.

128540952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595112 (or 595102 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 128540952 is about 11337.5902201482. The cubic root of 128540952 is about 504.6773771775.

The spelling of 128540952 in words is "one hundred twenty-eight million, five hundred forty thousand, nine hundred fifty-two".