2523990 has 96 divisors (see below), whose sum is σ = 7534944. Its totient is φ = 537600.

The previous prime is 2523967. The next prime is 2523991. The reversal of 2523990 is 993252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a d-powerful number, because it can be written as 2⁴ + 5⁸ + 2¹⁰ + 3¹³ + 9⁴ + 9⁶ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24940 + ... + 25040.

It is an arithmetic number, because the mean of its divisors is an integer number (78489).

2^2523990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2523990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3767472).

2523990 is an abundant number, since it is smaller than the sum of its proper divisors (5010954).

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

2523990 is a wasteful number, since it uses less digits than its factorization.

2523990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 2523990 is about 1588.7070214486. The cubic root of 2523990 is about 136.1536254192.

The spelling of 2523990 in words is "two million, five hundred twenty-three thousand, nine hundred ninety".