2531420 has 24 divisors (see below), whose sum is σ = 5431104. Its totient is φ = 990656.

The previous prime is 2531413. The next prime is 2531423. The reversal of 2531420 is 241352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531423) 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, 407 + ... + 2286.

It is an arithmetic number, because the mean of its divisors is an integer number (226296).

2^2531420 is an apocalyptic number.

2531420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531420 is an abundant number, since it is smaller than the sum of its proper divisors (2899684).

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

2531420 is a wasteful number, since it uses less digits than its factorization.

2531420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749 (or 2747 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2531420 is about 1591.0436826184. The cubic root of 2531420 is about 136.2870953620.

Adding to 2531420 its reverse (241352), we get a palindrome (2772772).

The spelling of 2531420 in words is "two million, five hundred thirty-one thousand, four hundred twenty".