397020672 has 120 divisors (see below), whose sum is σ = 1185738840. Its totient is φ = 127733760.

The previous prime is 397020667. The next prime is 397020683. The reversal of 397020672 is 276020793.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132147 + ... + 135117.

It is an arithmetic number, because the mean of its divisors is an integer number (9881157).

Almost surely, 2^397020672 is an apocalyptic number.

397020672 is a gapful number since it is divisible by the number (32) 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 397020672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592869420).

397020672 is an abundant number, since it is smaller than the sum of its proper divisors (788718168).

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

397020672 is a wasteful number, since it uses less digits than its factorization.

397020672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 397020672 is about 19925.3775873884. The cubic root of 397020672 is about 734.9724160133.

It can be divided in two parts, 3970 and 20672, that added together give a palindrome (24642).

The spelling of 397020672 in words is "three hundred ninety-seven million, twenty thousand, six hundred seventy-two".