5390123728 has 20 divisors (see below), whose sum is σ = 11392761888. Its totient is φ = 2450056160.

The previous prime is 5390123707. The next prime is 5390123743. The reversal of 5390123728 is 8273210935.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15312676 + ... + 15313027.

Almost surely, 2^5390123728 is an apocalyptic number.

It is an amenable number.

5390123728 is an abundant number, since it is smaller than the sum of its proper divisors (6002638160).

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

5390123728 is a wasteful number, since it uses less digits than its factorization.

5390123728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30625722 (or 30625716 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 5390123728 is about 73417.4620100695. The cubic root of 5390123728 is about 1753.3404200375.

The spelling of 5390123728 in words is "five billion, three hundred ninety million, one hundred twenty-three thousand, seven hundred twenty-eight".