285722320900 has 27 divisors (see below), whose sum is σ = 620029035871. Its totient is φ = 114286790240.

The previous prime is 285722320841. The next prime is 285722320901. The reversal of 285722320900 is 9023227582.

The square root of 285722320900 is 534530.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 361228036 + 285361092864 = 19006^2 + 534192^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285722320901) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5318574 + ... + 5372026.

Almost surely, 2^285722320900 is an apocalyptic number.

285722320900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

285722320900 is the 534530-th square number.

It is an amenable number.

285722320900 is an abundant number, since it is smaller than the sum of its proper divisors (334306714971).

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

285722320900 is an frugal number, since it uses more digits than its factorization.

285722320900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106920 (or 53460 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 285722320900 in words is "two hundred eighty-five billion, seven hundred twenty-two million, three hundred twenty thousand, nine hundred".