129621488 has 40 divisors (see below), whose sum is σ = 259275072. Its totient is φ = 62742528.

The previous prime is 129621473. The next prime is 129621493. The reversal of 129621488 is 884126921.

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, 72056 + ... + 73832.

Almost surely, 2^129621488 is an apocalyptic number.

It is an amenable number.

129621488 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

129621488 is a wasteful number, since it uses less digits than its factorization.

129621488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929 (or 1923 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 129621488 is about 11385.1433016893. The cubic root of 129621488 is about 506.0875662791.

The spelling of 129621488 in words is "one hundred twenty-nine million, six hundred twenty-one thousand, four hundred eighty-eight".