285007707 has 32 divisors (see below), whose sum is σ = 447682560. Its totient is φ = 178886880.

The previous prime is 285007691. The next prime is 285007729. The reversal of 285007707 is 707700582.

It is not a de Polignac number, because 285007707 - 2⁴ = 285007691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285007777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26368 + ... + 35570.

It is an arithmetic number, because the mean of its divisors is an integer number (13990080).

Almost surely, 2^285007707 is an apocalyptic number.

285007707 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

285007707 is a deficient number, since it is larger than the sum of its proper divisors (162674853).

285007707 is a wasteful number, since it uses less digits than its factorization.

285007707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9280 (or 9274 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The square root of 285007707 is about 16882.1712762310. The cubic root of 285007707 is about 658.0903684669.

The spelling of 285007707 in words is "two hundred eighty-five million, seven thousand, seven hundred seven".