285619990 has 8 divisors (see below), whose sum is σ = 514116000. Its totient is φ = 114247992.

The previous prime is 285619979. The next prime is 285620011. The reversal of 285619990 is 99916582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14280990 + ... + 14281009.

It is an arithmetic number, because the mean of its divisors is an integer number (64264500).

Almost surely, 2^285619990 is an apocalyptic number.

285619990 is a deficient number, since it is larger than the sum of its proper divisors (228496010).

285619990 is a wasteful number, since it uses less digits than its factorization.

285619990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28562006.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 285619990 is about 16900.2955595457. The cubic root of 285619990 is about 658.5612906385.

The spelling of 285619990 in words is "two hundred eighty-five million, six hundred nineteen thousand, nine hundred ninety".