22497480 has 128 divisors (see below), whose sum is σ = 77155200. Its totient is φ = 5826816.

The previous prime is 22497469. The next prime is 22497487. The reversal of 22497480 is 8479422.

It is a super-2 number, since 2×22497480² = 1012273212700800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22497487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39679 + ... + 40241.

It is an arithmetic number, because the mean of its divisors is an integer number (602775).

Almost surely, 2^22497480 is an apocalyptic number.

22497480 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 22497480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38577600).

22497480 is an abundant number, since it is smaller than the sum of its proper divisors (54657720).

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

22497480 is a wasteful number, since it uses less digits than its factorization.

22497480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 22497480 is about 4743.1508514910. The cubic root of 22497480 is about 282.3002686673.

The spelling of 22497480 in words is "twenty-two million, four hundred ninety-seven thousand, four hundred eighty".