49290290 has 32 divisors (see below), whose sum is σ = 104143104. Its totient is φ = 16441920.

The previous prime is 49290281. The next prime is 49290347. The reversal of 49290290 is 9209294.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 49290290.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6926 + ... + 12105.

It is an arithmetic number, because the mean of its divisors is an integer number (3254472).

Almost surely, 2^49290290 is an apocalyptic number.

49290290 is an abundant number, since it is smaller than the sum of its proper divisors (54852814).

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

49290290 is a wasteful number, since it uses less digits than its factorization.

49290290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19082.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 49290290 is about 7020.7043806160. The cubic root of 49290290 is about 366.6517744181.

The spelling of 49290290 in words is "forty-nine million, two hundred ninety thousand, two hundred ninety".