490891236 has 48 divisors (see below), whose sum is σ = 1292639040. Its totient is φ = 143624320.

The previous prime is 490891229. The next prime is 490891241. The reversal of 490891236 is 632198094.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60291 + ... + 67946.

It is an arithmetic number, because the mean of its divisors is an integer number (26929980).

Almost surely, 2^490891236 is an apocalyptic number.

It is an amenable number.

490891236 is an abundant number, since it is smaller than the sum of its proper divisors (801747804).

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

490891236 is a wasteful number, since it uses less digits than its factorization.

490891236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128284 (or 128282 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 490891236 is about 22156.0654449295. The cubic root of 490891236 is about 788.8512042686.

The spelling of 490891236 in words is "four hundred ninety million, eight hundred ninety-one thousand, two hundred thirty-six".