545909728 has 48 divisors (see below), whose sum is σ = 1322788320. Its totient is φ = 215963136.

The previous prime is 545909687. The next prime is 545909753. The reversal of 545909728 is 827909545.

It is a super-2 number, since 2×545909728² = 596034862250067968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90823 + ... + 96646.

It is an arithmetic number, because the mean of its divisors is an integer number (27558090).

Almost surely, 2^545909728 is an apocalyptic number.

It is an amenable number.

545909728 is an abundant number, since it is smaller than the sum of its proper divisors (776878592).

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

545909728 is a wasteful number, since it uses less digits than its factorization.

545909728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187499 (or 187491 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 545909728 is about 23364.7111687690. The cubic root of 545909728 is about 817.2851560981.

The spelling of 545909728 in words is "five hundred forty-five million, nine hundred nine thousand, seven hundred twenty-eight".