22475280 has 80 divisors (see below), whose sum is σ = 71584704. Its totient is φ = 5829120.

The previous prime is 22475269. The next prime is 22475287. The reversal of 22475280 is 8257422.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×22475280² = 1010276422156800, 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 (22475287) 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 15 ways as a sum of consecutive naturals, for example, 7615 + ... + 10145.

Almost surely, 2^22475280 is an apocalyptic number.

22475280 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 22475280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35792352).

22475280 is an abundant number, since it is smaller than the sum of its proper divisors (49109424).

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

22475280 is a wasteful number, since it uses less digits than its factorization.

22475280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584 (or 2578 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 22475280 is about 4740.8100573636. The cubic root of 22475280 is about 282.2073822863.

The spelling of 22475280 in words is "twenty-two million, four hundred seventy-five thousand, two hundred eighty".