285073749 has 24 divisors (see below), whose sum is σ = 427819392. Its totient is φ = 189695520.

The previous prime is 285073727. The next prime is 285073751. The reversal of 285073749 is 947370582.

It is not a de Polignac number, because 285073749 - 2⁵ = 285073717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285073759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230964 + ... + 232194.

It is an arithmetic number, because the mean of its divisors is an integer number (17825808).

Almost surely, 2^285073749 is an apocalyptic number.

It is an amenable number.

285073749 is a deficient number, since it is larger than the sum of its proper divisors (142745643).

285073749 is an equidigital number, since it uses as much as digits as its factorization.

285073749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 285073749 is about 16884.1271317175. The cubic root of 285073749 is about 658.1411954521.

The spelling of 285073749 in words is "two hundred eighty-five million, seventy-three thousand, seven hundred forty-nine".