542491728 has 40 divisors (see below), whose sum is σ = 1402368576. Its totient is φ = 180710400.

The previous prime is 542491717. The next prime is 542491783. The reversal of 542491728 is 827194245.

It is a self number, because there is not a number n which added to its sum of digits gives 542491728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97173 + ... + 102603.

Almost surely, 2^542491728 is an apocalyptic number.

It is an amenable number.

542491728 is an abundant number, since it is smaller than the sum of its proper divisors (859876848).

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

542491728 is a wasteful number, since it uses less digits than its factorization.

542491728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7523 (or 7517 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 542491728 is about 23291.4518225035. The cubic root of 542491728 is about 815.5758801381.

The spelling of 542491728 in words is "five hundred forty-two million, four hundred ninety-one thousand, seven hundred twenty-eight".