128986072 has 16 divisors (see below), whose sum is σ = 256075560. Its totient is φ = 60699264.

The previous prime is 128986069. The next prime is 128986087. The reversal of 128986072 is 270689821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474078 + ... + 474349.

Almost surely, 2^128986072 is an apocalyptic number.

It is an amenable number.

128986072 is a deficient number, since it is larger than the sum of its proper divisors (127089488).

128986072 is a wasteful number, since it uses less digits than its factorization.

128986072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948450 (or 948446 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 128986072 is about 11357.2035290383. The cubic root of 128986072 is about 505.2592493012.

The spelling of 128986072 in words is "one hundred twenty-eight million, nine hundred eighty-six thousand, seventy-two".