285136944 has 40 divisors (see below), whose sum is σ = 737296560. Its totient is φ = 94956288.

The previous prime is 285136939. The next prime is 285136949. The reversal of 285136944 is 449631582.

It is an interprime number because it is at equal distance from previous prime (285136939) and next prime (285136949).

It is a junction number, because it is equal to n+sod(n) for n = 285136896 and 285136905.

It is not an unprimeable number, because it can be changed into a prime (285136949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66514 + ... + 70670.

It is an arithmetic number, because the mean of its divisors is an integer number (18432414).

Almost surely, 2^285136944 is an apocalyptic number.

285136944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

285136944 is an abundant number, since it is smaller than the sum of its proper divisors (452159616).

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

285136944 is a wasteful number, since it uses less digits than its factorization.

285136944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597 (or 5591 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 285136944 is about 16885.9984602629. The cubic root of 285136944 is about 658.1898239913.

The spelling of 285136944 in words is "two hundred eighty-five million, one hundred thirty-six thousand, nine hundred forty-four".