6397428732 has 24 divisors (see below), whose sum is σ = 14928762576. Its totient is φ = 2132272128.

The previous prime is 6397428731. The next prime is 6397428733. The reversal of 6397428732 is 2378247936.

It is an interprime number because it is at equal distance from previous prime (6397428731) and next prime (6397428733).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397428731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157698 + ... + 194070.

It is an arithmetic number, because the mean of its divisors is an integer number (622031774).

Almost surely, 2^6397428732 is an apocalyptic number.

It is an amenable number.

6397428732 is an abundant number, since it is smaller than the sum of its proper divisors (8531333844).

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

6397428732 is a wasteful number, since it uses less digits than its factorization.

6397428732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51037 (or 51035 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The square root of 6397428732 is about 79983.9279605597. The cubic root of 6397428732 is about 1856.3868591222.

The spelling of 6397428732 in words is "six billion, three hundred ninety-seven million, four hundred twenty-eight thousand, seven hundred thirty-two".