15131420 has 12 divisors (see below), whose sum is σ = 31776024. Its totient is φ = 6052560.

The previous prime is 15131387. The next prime is 15131437. The reversal of 15131420 is 2413151.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378266 + ... + 378305.

It is an arithmetic number, because the mean of its divisors is an integer number (2648002).

Almost surely, 2^15131420 is an apocalyptic number.

15131420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15131420 is an abundant number, since it is smaller than the sum of its proper divisors (16644604).

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

15131420 is a wasteful number, since it uses less digits than its factorization.

15131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756580 (or 756578 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 15131420 is about 3889.9125954191. The cubic root of 15131420 is about 247.3393577158.

Adding to 15131420 its reverse (2413151), we get a palindrome (17544571).

It can be divided in two parts, 15131 and 420, that added together give a palindrome (15551).

The spelling of 15131420 in words is "fifteen million, one hundred thirty-one thousand, four hundred twenty".