22280748 has 24 divisors (see below), whose sum is σ = 59415552. Its totient is φ = 6365904.

The previous prime is 22280743. The next prime is 22280779. The reversal of 22280748 is 84708222.

It is not an unprimeable number, because it can be changed into a prime (22280743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132540 + ... + 132707.

It is an arithmetic number, because the mean of its divisors is an integer number (2475648).

Almost surely, 2^22280748 is an apocalyptic number.

22280748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22280748 is an abundant number, since it is smaller than the sum of its proper divisors (37134804).

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

22280748 is a wasteful number, since it uses less digits than its factorization.

22280748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265261 (or 265259 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 22280748 is about 4720.2487222603. The cubic root of 22280748 is about 281.3908181738.

The spelling of 22280748 in words is "twenty-two million, two hundred eighty thousand, seven hundred forty-eight".