15228480 has 112 divisors (see below), whose sum is σ = 50109120. Its totient is φ = 3913728.

The previous prime is 15228449. The next prime is 15228487. The reversal of 15228480 is 8482251.

It is a super-2 number, since 2×15228480² = 463813206220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (15228487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27567 + ... + 28113.

Almost surely, 2^15228480 is an apocalyptic number.

15228480 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 15228480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25054560).

15228480 is an abundant number, since it is smaller than the sum of its proper divisors (34880640).

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

15228480 is a wasteful number, since it uses less digits than its factorization.

15228480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 15228480 is about 3902.3685115581. The cubic root of 15228480 is about 247.8670810450.

The spelling of 15228480 in words is "fifteen million, two hundred twenty-eight thousand, four hundred eighty".