15013940 has 48 divisors (see below), whose sum is σ = 33288192. Its totient is φ = 5677056.

The previous prime is 15013939. The next prime is 15013949. The reversal of 15013940 is 4931051.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15013949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58292 + ... + 58548.

It is an arithmetic number, because the mean of its divisors is an integer number (693504).

Almost surely, 2^15013940 is an apocalyptic number.

15013940 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 15013940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16644096).

15013940 is an abundant number, since it is smaller than the sum of its proper divisors (18274252).

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

15013940 is a wasteful number, since it uses less digits than its factorization.

15013940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 15013940 is about 3874.7825745453. The cubic root of 15013940 is about 246.6975815485.

Adding to 15013940 its reverse (4931051), we get a palindrome (19944991).

The spelling of 15013940 in words is "fifteen million, thirteen thousand, nine hundred forty".