128153720 has 32 divisors (see below), whose sum is σ = 289390320. Its totient is φ = 51075840.

The previous prime is 128153719. The next prime is 128153731. The reversal of 128153720 is 27351821.

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, 5660 + ... + 16980.

Almost surely, 2^128153720 is an apocalyptic number.

128153720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 11320×11321.

It is an amenable number.

128153720 is an abundant number, since it is smaller than the sum of its proper divisors (161236600).

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

128153720 is a wasteful number, since it uses less digits than its factorization.

128153720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615 (or 11611 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 128153720 is about 11320.4999889581. The cubic root of 128153720 is about 504.1700841089.

The spelling of 128153720 in words is "one hundred twenty-eight million, one hundred fifty-three thousand, seven hundred twenty".