797312820 has 48 divisors (see below), whose sum is σ = 2233744128. Its totient is φ = 212496000.

The previous prime is 797312771. The next prime is 797312821. The reversal of 797312820 is 28213797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797312821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165445 + ... + 170195.

It is an arithmetic number, because the mean of its divisors is an integer number (46536336).

Almost surely, 2^797312820 is an apocalyptic number.

It is an amenable number.

797312820 is an abundant number, since it is smaller than the sum of its proper divisors (1436431308).

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

797312820 is a wasteful number, since it uses less digits than its factorization.

797312820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7560 (or 7558 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 797312820 is about 28236.7282099042. The cubic root of 797312820 is about 927.2772020510.

The spelling of 797312820 in words is "seven hundred ninety-seven million, three hundred twelve thousand, eight hundred twenty".