537728720 has 20 divisors (see below), whose sum is σ = 1250219460. Its totient is φ = 215091456.

The previous prime is 537728713. The next prime is 537728749. The reversal of 537728720 is 27827735.

It can be written as a sum of positive squares in 2 ways, for example, as 279290944 + 258437776 = 16712^2 + 16076^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 3360725 + ... + 3360884.

It is an arithmetic number, because the mean of its divisors is an integer number (62510973).

Almost surely, 2^537728720 is an apocalyptic number.

It is an amenable number.

537728720 is an abundant number, since it is smaller than the sum of its proper divisors (712490740).

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

537728720 is a wasteful number, since it uses less digits than its factorization.

537728720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6721622 (or 6721616 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 537728720 is about 23188.9784164805. The cubic root of 537728720 is about 813.1819763738.

The spelling of 537728720 in words is "five hundred thirty-seven million, seven hundred twenty-eight thousand, seven hundred twenty".