285744375820 has 48 divisors (see below), whose sum is σ = 614767942656. Its totient is φ = 111497472000.

The previous prime is 285744375817. The next prime is 285744375821. The reversal of 285744375820 is 28573447582.

It is a super-2 number, since 2×285744375820² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285744375821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11205685 + ... + 11231155.

It is an arithmetic number, because the mean of its divisors is an integer number (12807665472).

Almost surely, 2^285744375820 is an apocalyptic number.

285744375820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285744375820 is an abundant number, since it is smaller than the sum of its proper divisors (329023566836).

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

285744375820 is a wasteful number, since it uses less digits than its factorization.

285744375820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39202 (or 39200 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 55.

The spelling of 285744375820 in words is "two hundred eighty-five billion, seven hundred forty-four million, three hundred seventy-five thousand, eight hundred twenty".