397058797728 has 36 divisors (see below), whose sum is σ = 1129135956858. Its totient is φ = 132352932480.

The previous prime is 397058797687. The next prime is 397058797787. The reversal of 397058797728 is 827797850793.

397058797728 is a `hidden beast` number, since 39 + 7 + 0 + 587 + 9 + 7 + 7 + 2 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 328177745424 + 68881052304 = 572868^2 + 262452^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 689337903 + ... + 689338478.

Almost surely, 2^397058797728 is an apocalyptic number.

It is an amenable number.

397058797728 is an abundant number, since it is smaller than the sum of its proper divisors (732077159130).

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

397058797728 is a wasteful number, since it uses less digits than its factorization.

397058797728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378676397 (or 1378676386 counting only the distinct ones).

The product of its (nonzero) digits is 373403520, while the sum is 72.

The spelling of 397058797728 in words is "three hundred ninety-seven billion, fifty-eight million, seven hundred ninety-seven thousand, seven hundred twenty-eight".