2499804 has 18 divisors (see below), whose sum is σ = 6319040. Its totient is φ = 833256.

The previous prime is 2499803. The next prime is 2499821. The reversal of 2499804 is 4089942.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) 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 (36), and also a Moran number because the ratio is a prime number: 69439 = 2499804 / (2 + 4 + 9 + 9 + 8 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34684 + ... + 34755.

2^2499804 is an apocalyptic number.

It is an amenable number.

2499804 is an abundant number, since it is smaller than the sum of its proper divisors (3819236).

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

2499804 is a wasteful number, since it uses less digits than its factorization.

2499804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69449 (or 69444 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2499804 is about 1581.0768482272. The cubic root of 2499804 is about 135.7173338980.

The spelling of 2499804 in words is "two million, four hundred ninety-nine thousand, eight hundred four".