397028016 has 240 divisors, whose sum is σ = 1410409728. Its totient is φ = 101260800.

The previous prime is 397028011. The next prime is 397028017. The reversal of 397028016 is 610820793.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397028011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 676075 + ... + 676661.

Almost surely, 2^397028016 is an apocalyptic number.

397028016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397028016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705204864).

397028016 is an abundant number, since it is smaller than the sum of its proper divisors (1013381712).

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

397028016 is a wasteful number, since it uses less digits than its factorization.

397028016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 397028016 is about 19925.5618741354. The cubic root of 397028016 is about 734.9769477707.

397028016 divided by its sum of digits (36) gives a triangular number (11028556 = T₄₆₉₆).

The spelling of 397028016 in words is "three hundred ninety-seven million, twenty-eight thousand, sixteen".