2090904 has 16 divisors (see below), whose sum is σ = 5227320. Its totient is φ = 696960.

The previous prime is 2090873. The next prime is 2090923. The reversal of 2090904 is 4090902.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 87121 = 2090904 / (2 + 0 + 9 + 0 + 9 + 0 + 4).

It is a zygodrome in base 2.

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, 43537 + ... + 43584.

2^2090904 is an apocalyptic number.

2090904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2090904 is an abundant number, since it is smaller than the sum of its proper divisors (3136416).

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

2090904 is a wasteful number, since it uses less digits than its factorization.

2090904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87130 (or 87126 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 2090904 is about 1445.9958506165. The cubic root of 2090904 is about 127.8727576673.

The spelling of 2090904 in words is "two million, ninety thousand, nine hundred four".