15222480 has 320 divisors, whose sum is σ = 62995968. Its totient is φ = 2949120.

The previous prime is 15222479. The next prime is 15222491. The reversal of 15222480 is 8422251.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 15222480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 371260 + ... + 371300.

Almost surely, 2^15222480 is an apocalyptic number.

15222480 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 15222480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31497984).

15222480 is an abundant number, since it is smaller than the sum of its proper divisors (47773488).

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

15222480 is a wasteful number, since it uses less digits than its factorization.

15222480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 15222480 is about 3901.5996719295. The cubic root of 15222480 is about 247.8345236733.

The spelling of 15222480 in words is "fifteen million, two hundred twenty-two thousand, four hundred eighty".