397333578620 has 48 divisors (see below), whose sum is σ = 919639230048. Its totient is φ = 142995394560.

The previous prime is 397333578557. The next prime is 397333578623. The reversal of 397333578620 is 26875333793.

It is a super-2 number, since 2×397333578620² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397333578623) 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, 9288257 + ... + 9330936.

It is an arithmetic number, because the mean of its divisors is an integer number (19159150626).

Almost surely, 2^397333578620 is an apocalyptic number.

It is an amenable number.

397333578620 is an abundant number, since it is smaller than the sum of its proper divisors (522305651428).

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

397333578620 is a wasteful number, since it uses less digits than its factorization.

397333578620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18619310 (or 18619308 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 56.

The spelling of 397333578620 in words is "three hundred ninety-seven billion, three hundred thirty-three million, five hundred seventy-eight thousand, six hundred twenty".