22291248 has 40 divisors (see below), whose sum is σ = 65813248. Its totient is φ = 6368832.

The previous prime is 22291229. The next prime is 22291253. The reversal of 22291248 is 84219222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32836 + ... + 33507.

Almost surely, 2^22291248 is an apocalyptic number.

22291248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22291248 is an abundant number, since it is smaller than the sum of its proper divisors (43522000).

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

22291248 is a wasteful number, since it uses less digits than its factorization.

22291248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66361 (or 66355 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 22291248 is about 4721.3608207804. The cubic root of 22291248 is about 281.4350138711.

The spelling of 22291248 in words is "twenty-two million, two hundred ninety-one thousand, two hundred forty-eight".