22454280 has 128 divisors (see below), whose sum is σ = 79315200. Its totient is φ = 5630976.

The previous prime is 22454273. The next prime is 22454281. The reversal of 22454280 is 8245422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22454281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17749 + ... + 18971.

It is an arithmetic number, because the mean of its divisors is an integer number (619650).

Almost surely, 2^22454280 is an apocalyptic number.

22454280 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 22454280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39657600).

22454280 is an abundant number, since it is smaller than the sum of its proper divisors (56860920).

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

22454280 is a wasteful number, since it uses less digits than its factorization.

22454280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260 (or 1250 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 22454280 is about 4738.5947283979. The cubic root of 22454280 is about 282.1194604782.

The spelling of 22454280 in words is "twenty-two million, four hundred fifty-four thousand, two hundred eighty".