285197290 has 16 divisors (see below), whose sum is σ = 586691712. Its totient is φ = 97781904.

The previous prime is 285197267. The next prime is 285197291. The reversal of 285197290 is 92791582.

It is not an unprimeable number, because it can be changed into a prime (285197291) 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, 2037054 + ... + 2037193.

It is an arithmetic number, because the mean of its divisors is an integer number (36668232).

Almost surely, 2^285197290 is an apocalyptic number.

285197290 is an abundant number, since it is smaller than the sum of its proper divisors (301494422).

285197290 is a wasteful number, since it uses less digits than its factorization.

285197290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074261.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 285197290 is about 16887.7852307518. The cubic root of 285197290 is about 658.2362535196.

The spelling of 285197290 in words is "two hundred eighty-five million, one hundred ninety-seven thousand, two hundred ninety".