797987520 has 168 divisors, whose sum is σ = 2994385680. Its totient is φ = 193443840.

The previous prime is 797987513. The next prime is 797987521. The reversal of 797987520 is 25789797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797987521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19086 + ... + 44274.

Almost surely, 2^797987520 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 797987520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497192840).

797987520 is an abundant number, since it is smaller than the sum of its proper divisors (2196398160).

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

797987520 is a wasteful number, since it uses less digits than its factorization.

797987520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25223 (or 25210 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 54.

The square root of 797987520 is about 28248.6728891819. The cubic root of 797987520 is about 927.5386876818.

The spelling of 797987520 in words is "seven hundred ninety-seven million, nine hundred eighty-seven thousand, five hundred twenty".