128899152 has 30 divisors (see below), whose sum is σ = 360739002. Its totient is φ = 42966336.

The previous prime is 128899123. The next prime is 128899159. The reversal of 128899152 is 251998821.

It can be written as a sum of positive squares in only one way, i.e., 79281216 + 49617936 = 8904^2 + 7044^2 .

It is a super-2 number, since 2×128899152² = 33229982772638208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128899098 and 128899107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128899159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 447423 + ... + 447710.

Almost surely, 2^128899152 is an apocalyptic number.

128899152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128899152 is an abundant number, since it is smaller than the sum of its proper divisors (231839850).

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

128899152 is a wasteful number, since it uses less digits than its factorization.

128899152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895147 (or 895138 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 128899152 is about 11353.3762379303. The cubic root of 128899152 is about 505.1457305784.

The spelling of 128899152 in words is "one hundred twenty-eight million, eight hundred ninety-nine thousand, one hundred fifty-two".