22515480 has 192 divisors, whose sum is σ = 83734560. Its totient is φ = 5197824.

The previous prime is 22515461. The next prime is 22515503. The reversal of 22515480 is 8451522.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79419 + ... + 79701.

Almost surely, 2^22515480 is an apocalyptic number.

22515480 is a gapful number since it is divisible by the number (20) 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 22515480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41867280).

22515480 is an abundant number, since it is smaller than the sum of its proper divisors (61219080).

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

22515480 is a wasteful number, since it uses less digits than its factorization.

22515480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 22515480 is about 4745.0479449633. The cubic root of 22515480 is about 282.3755371010.

The spelling of 22515480 in words is "twenty-two million, five hundred fifteen thousand, four hundred eighty".