22151480 has 64 divisors (see below), whose sum is σ = 55036800. Its totient is φ = 7971840.

The previous prime is 22151471. The next prime is 22151497. The reversal of 22151480 is 8415122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20801 + ... + 21839.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^22151480 is an apocalyptic number.

22151480 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 22151480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27518400).

22151480 is an abundant number, since it is smaller than the sum of its proper divisors (32885320).

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

22151480 is a wasteful number, since it uses less digits than its factorization.

22151480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 22151480 is about 4706.5358810913. The cubic root of 22151480 is about 280.8455731315.

The spelling of 22151480 in words is "twenty-two million, one hundred fifty-one thousand, four hundred eighty".