397276320 has 384 divisors, whose sum is σ = 1548288000. Its totient is φ = 85349376.

The previous prime is 397276291. The next prime is 397276337. The reversal of 397276320 is 23672793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3128097 + ... + 3128223.

It is an arithmetic number, because the mean of its divisors is an integer number (4032000).

Almost surely, 2^397276320 is an apocalyptic number.

397276320 is a gapful number since it is divisible by the number (30) 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 397276320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (774144000).

397276320 is an abundant number, since it is smaller than the sum of its proper divisors (1151011680).

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

397276320 is a wasteful number, since it uses less digits than its factorization.

397276320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 39.

The square root of 397276320 is about 19931.7916906634. The cubic root of 397276320 is about 735.1301356876.

The spelling of 397276320 in words is "three hundred ninety-seven million, two hundred seventy-six thousand, three hundred twenty".