22750280 has 64 divisors (see below), whose sum is σ = 60410880. Its totient is φ = 7545600.

The previous prime is 22750279. The next prime is 22750307. The reversal of 22750280 is 8205722.

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, 7370 + ... + 9990.

It is an arithmetic number, because the mean of its divisors is an integer number (943920).

Almost surely, 2^22750280 is an apocalyptic number.

22750280 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 22750280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30205440).

22750280 is an abundant number, since it is smaller than the sum of its proper divisors (37660600).

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

22750280 is a wasteful number, since it uses less digits than its factorization.

22750280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670 (or 2666 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 22750280 is about 4769.7253589698. The cubic root of 22750280 is about 283.3537178721.

The spelling of 22750280 in words is "twenty-two million, seven hundred fifty thousand, two hundred eighty".