15240064 has 64 divisors (see below), whose sum is σ = 35324640. Its totient is φ = 6414336.

The previous prime is 15240059. The next prime is 15240067. The reversal of 15240064 is 46004251.

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 (15240067) 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, 65292 + ... + 65524.

Almost surely, 2^15240064 is an apocalyptic number.

15240064 is a gapful number since it is divisible by the number (14) 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 15240064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17662320).

15240064 is an abundant number, since it is smaller than the sum of its proper divisors (20084576).

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

15240064 is an equidigital number, since it uses as much as digits as its factorization.

15240064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 15240064 is about 3903.8524562283. The cubic root of 15240064 is about 247.9299142918.

The spelling of 15240064 in words is "fifteen million, two hundred forty thousand, sixty-four".