15240940 has 72 divisors (see below), whose sum is σ = 38123568. Its totient is φ = 5045760.

The previous prime is 15240937. The next prime is 15240941. The reversal of 15240940 is 4904251.

It is not an unprimeable number, because it can be changed into a prime (15240941) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 208744 + ... + 208816.

It is an arithmetic number, because the mean of its divisors is an integer number (529494).

Almost surely, 2^15240940 is an apocalyptic number.

15240940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15240940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19061784).

15240940 is an abundant number, since it is smaller than the sum of its proper divisors (22882628).

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

15240940 is a wasteful number, since it uses less digits than its factorization.

15240940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 15240940 is about 3903.9646514793. The cubic root of 15240940 is about 247.9346645440.

The spelling of 15240940 in words is "fifteen million, two hundred forty thousand, nine hundred forty".