128752472 has 16 divisors (see below), whose sum is σ = 243756240. Its totient is φ = 63750816.

The previous prime is 128752471. The next prime is 128752487. The reversal of 128752472 is 274257821.

It is a super-2 number, since 2×128752472² = 33154398092221568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128752471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77303 + ... + 78950.

It is an arithmetic number, because the mean of its divisors is an integer number (15234765).

Almost surely, 2^128752472 is an apocalyptic number.

It is an amenable number.

128752472 is a deficient number, since it is larger than the sum of its proper divisors (115003768).

128752472 is a wasteful number, since it uses less digits than its factorization.

128752472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156362 (or 156358 counting only the distinct ones).

The product of its digits is 62720, while the sum is 38.

The square root of 128752472 is about 11346.9146467223. The cubic root of 128752472 is about 504.9540486895.

The spelling of 128752472 in words is "one hundred twenty-eight million, seven hundred fifty-two thousand, four hundred seventy-two".