128752452 has 36 divisors (see below), whose sum is σ = 334257196. Its totient is φ = 41757120.

The previous prime is 128752451. The next prime is 128752457. The reversal of 128752452 is 254257821.

It is a happy number.

128752452 is a `hidden beast` number, since 1 + 2 + 87 + 524 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 114190596 + 14561856 = 10686^2 + 3816^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (128752451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46999 + ... + 49662.

Almost surely, 2^128752452 is an apocalyptic number.

128752452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128752452 is an abundant number, since it is smaller than the sum of its proper divisors (205504744).

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

128752452 is a wasteful number, since it uses less digits than its factorization.

128752452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96708 (or 96703 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 128752452 is about 11346.9137654254. The cubic root of 128752452 is about 504.9540225435.

The spelling of 128752452 in words is "one hundred twenty-eight million, seven hundred fifty-two thousand, four hundred fifty-two".