2497920 has 64 divisors (see below), whose sum is σ = 7968240. Its totient is φ = 665600.

The previous prime is 2497903. The next prime is 2497927. The reversal of 2497920 is 297942.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2497927) 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, 1270 + ... + 2570.

2^2497920 is an apocalyptic number.

2497920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2497920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3984120).

2497920 is an abundant number, since it is smaller than the sum of its proper divisors (5470320).

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

2497920 is a wasteful number, since it uses less digits than its factorization.

2497920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 2497920 is about 1580.4809394612. The cubic root of 2497920 is about 135.6832304618.

The spelling of 2497920 in words is "two million, four hundred ninety-seven thousand, nine hundred twenty".