15426240 has 56 divisors (see below), whose sum is σ = 48981360. Its totient is φ = 4113408.

The previous prime is 15426227. The next prime is 15426247. The reversal of 15426240 is 4262451.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 15426240.

It is not an unprimeable number, because it can be changed into a prime (15426247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7075 + ... + 8994.

Almost surely, 2^15426240 is an apocalyptic number.

15426240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15426240 is an abundant number, since it is smaller than the sum of its proper divisors (33555120).

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

15426240 is a wasteful number, since it uses less digits than its factorization.

15426240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16089 (or 16079 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 15426240 is about 3927.6252367047. The cubic root of 15426240 is about 248.9354197772.

Adding to 15426240 its reverse (4262451), we get a palindrome (19688691).

The spelling of 15426240 in words is "fifteen million, four hundred twenty-six thousand, two hundred forty".