655372928 has 128 divisors (see below), whose sum is σ = 1587772800. Its totient is φ = 263208960.

The previous prime is 655372919. The next prime is 655372937. The reversal of 655372928 is 829273556.

It is an interprime number because it is at equal distance from previous prime (655372919) and next prime (655372937).

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2332148 + ... + 2332428.

It is an arithmetic number, because the mean of its divisors is an integer number (12404475).

Almost surely, 2^655372928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655372928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (793886400).

655372928 is an abundant number, since it is smaller than the sum of its proper divisors (932399872).

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

655372928 is a wasteful number, since it uses less digits than its factorization.

655372928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 446 counting only the distinct ones).

The product of its digits is 907200, while the sum is 47.

The square root of 655372928 is about 25600.2524987548. The cubic root of 655372928 is about 868.6193488599.

The spelling of 655372928 in words is "six hundred fifty-five million, three hundred seventy-two thousand, nine hundred twenty-eight".