397828915836 has 48 divisors (see below), whose sum is σ = 1036205563008. Its totient is φ = 117750628800.

The previous prime is 397828915831. The next prime is 397828915873. The reversal of 397828915836 is 638519828793.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397828915831) 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, 35039155 + ... + 35050506.

It is an arithmetic number, because the mean of its divisors is an integer number (21587615896).

Almost surely, 2^397828915836 is an apocalyptic number.

It is an amenable number.

397828915836 is an abundant number, since it is smaller than the sum of its proper divisors (638376647172).

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

397828915836 is a wasteful number, since it uses less digits than its factorization.

397828915836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70089722 (or 70089720 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 69.

The spelling of 397828915836 in words is "three hundred ninety-seven billion, eight hundred twenty-eight million, nine hundred fifteen thousand, eight hundred thirty-six".