397740383028 has 36 divisors (see below), whose sum is σ = 1021881262948. Its totient is φ = 130406682240.

The previous prime is 397740382937. The next prime is 397740383077. The reversal of 397740383028 is 820383047793.

397740383028 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30227995044 + 367512387984 = 173862^2 + 606228^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90558001 + ... + 90562392.

Almost surely, 2^397740383028 is an apocalyptic number.

It is an amenable number.

397740383028 is an abundant number, since it is smaller than the sum of its proper divisors (624140879920).

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

397740383028 is a wasteful number, since it uses less digits than its factorization.

397740383028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181120464 (or 181120459 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 397740383028 in words is "three hundred ninety-seven billion, seven hundred forty million, three hundred eighty-three thousand, twenty-eight".