15223040 has 72 divisors (see below), whose sum is σ = 41697600. Its totient is φ = 5216256.

The previous prime is 15223037. The next prime is 15223051. The reversal of 15223040 is 4032251.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8111 + ... + 9809.

Almost surely, 2^15223040 is an apocalyptic number.

15223040 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 15223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20848800).

15223040 is an abundant number, since it is smaller than the sum of its proper divisors (26474560).

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

15223040 is an equidigital number, since it uses as much as digits as its factorization.

15223040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 15223040 is about 3901.6714367050. The cubic root of 15223040 is about 247.8375627233.

Adding to 15223040 its reverse (4032251), we get a palindrome (19255291).

The spelling of 15223040 in words is "fifteen million, two hundred twenty-three thousand, forty".