15040992 has 24 divisors (see below), whose sum is σ = 39482856. Its totient is φ = 5013632.

The previous prime is 15040979. The next prime is 15040999. The reversal of 15040992 is 29904051.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15040999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78243 + ... + 78434.

It is an arithmetic number, because the mean of its divisors is an integer number (1645119).

Almost surely, 2^15040992 is an apocalyptic number.

15040992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15040992 is an abundant number, since it is smaller than the sum of its proper divisors (24441864).

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

15040992 is a wasteful number, since it uses less digits than its factorization.

15040992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156690 (or 156682 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 15040992 is about 3878.2717800587. The cubic root of 15040992 is about 246.8456585756.

The spelling of 15040992 in words is "fifteen million, forty thousand, nine hundred ninety-two".