128737072 has 20 divisors (see below), whose sum is σ = 260273520. Its totient is φ = 61569728.

The previous prime is 128737069. The next prime is 128737087. The reversal of 128737072 is 270737821.

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, 174547 + ... + 175282.

It is an arithmetic number, because the mean of its divisors is an integer number (13013676).

Almost surely, 2^128737072 is an apocalyptic number.

It is an amenable number.

128737072 is an abundant number, since it is smaller than the sum of its proper divisors (131536448).

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

128737072 is a wasteful number, since it uses less digits than its factorization.

128737072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349860 (or 349854 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 128737072 is about 11346.2360278640. The cubic root of 128737072 is about 504.9339154776.

The spelling of 128737072 in words is "one hundred twenty-eight million, seven hundred thirty-seven thousand, seventy-two".