15233440 has 48 divisors (see below), whose sum is σ = 37890720. Its totient is φ = 5771520.

The previous prime is 15233423. The next prime is 15233443. The reversal of 15233440 is 4433251.

It is not an unprimeable number, because it can be changed into a prime (15233443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535 + ... + 5545.

It is an arithmetic number, because the mean of its divisors is an integer number (789390).

Almost surely, 2^15233440 is an apocalyptic number.

15233440 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 15233440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18945360).

15233440 is an abundant number, since it is smaller than the sum of its proper divisors (22657280).

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

15233440 is a wasteful number, since it uses less digits than its factorization.

15233440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045 (or 5037 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 15233440 is about 3903.0039713021. The cubic root of 15233440 is about 247.8939886827.

Adding to 15233440 its reverse (4433251), we get a palindrome (19666691).

The spelling of 15233440 in words is "fifteen million, two hundred thirty-three thousand, four hundred forty".