2523402 has 36 divisors (see below), whose sum is σ = 6362226. Its totient is φ = 720720.

The previous prime is 2523401. The next prime is 2523413. The reversal of 2523402 is 2043252.

It can be written as a sum of positive squares in only one way, i.e., 2099601 + 423801 = 1449^2 + 651^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2523401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 549 + ... + 2312.

2^2523402 is an apocalyptic number.

2523402 is an abundant number, since it is smaller than the sum of its proper divisors (3838824).

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

2523402 is a wasteful number, since it uses less digits than its factorization.

2523402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883 (or 2873 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2523402 is about 1588.5219545225. The cubic root of 2523402 is about 136.1430516122.

Adding to 2523402 its reverse (2043252), we get a palindrome (4566654).

The spelling of 2523402 in words is "two million, five hundred twenty-three thousand, four hundred two".