15233920 has 64 divisors (see below), whose sum is σ = 39241440. Its totient is φ = 5621760.

The previous prime is 15233917. The next prime is 15233923. The reversal of 15233920 is 2933251.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15233917) and next prime (15233923).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15233923) 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, 7405 + ... + 9235.

Almost surely, 2^15233920 is an apocalyptic number.

15233920 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 15233920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19620720).

15233920 is an abundant number, since it is smaller than the sum of its proper divisors (24007520).

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

15233920 is a wasteful number, since it uses less digits than its factorization.

15233920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863 (or 1851 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 15233920 is about 3903.0654619158. The cubic root of 15233920 is about 247.8965923377.

The spelling of 15233920 in words is "fifteen million, two hundred thirty-three thousand, nine hundred twenty".