2451904 has 56 divisors (see below), whose sum is σ = 6002528. Its totient is φ = 967680.

The previous prime is 2451887. The next prime is 2451907. The reversal of 2451904 is 4091542.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5614 + ... + 6034.

It is an arithmetic number, because the mean of its divisors is an integer number (107188).

2^2451904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2451904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3001264).

2451904 is an abundant number, since it is smaller than the sum of its proper divisors (3550624).

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

2451904 is a wasteful number, since it uses less digits than its factorization.

2451904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2451904 is about 1565.8556766190. The cubic root of 2451904 is about 134.8448881492.

The spelling of 2451904 in words is "two million, four hundred fifty-one thousand, nine hundred four".