397196382240 has 480 divisors, whose sum is σ = 1641114566784. Its totient is φ = 88572579840.

The previous prime is 397196382157. The next prime is 397196382257. The reversal of 397196382240 is 42283691793.

397196382240 is a `hidden beast` number, since 3 + 9 + 7 + 19 + 6 + 382 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3666127 + ... + 3772913.

Almost surely, 2^397196382240 is an apocalyptic number.

397196382240 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 397196382240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820557283392).

397196382240 is an abundant number, since it is smaller than the sum of its proper divisors (1243918184544).

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

397196382240 is a wasteful number, since it uses less digits than its factorization.

397196382240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106862 (or 106845 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 397196382240 in words is "three hundred ninety-seven billion, one hundred ninety-six million, three hundred eighty-two thousand, two hundred forty".