2523420 has 48 divisors (see below), whose sum is σ = 7852320. Its totient is φ = 672768.

The previous prime is 2523419. The next prime is 2523457. The reversal of 2523420 is 243252.

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

It is a junction number, because it is equal to n+sod(n) for n = 2523393 and 2523402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1797 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (163590).

2^2523420 is an apocalyptic number.

2523420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2523420 is an abundant number, since it is smaller than the sum of its proper divisors (5328900).

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

2523420 is a wasteful number, since it uses less digits than its factorization.

2523420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691 (or 4683 counting only the distinct ones).

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

The square root of 2523420 is about 1588.5276201565. The cubic root of 2523420 is about 136.1433753245.

Adding to 2523420 its reverse (243252), we get a palindrome (2766672).

The spelling of 2523420 in words is "two million, five hundred twenty-three thousand, four hundred twenty".