22117648 has 20 divisors (see below), whose sum is σ = 48975040. Its totient is φ = 9478944.

The previous prime is 22117643. The next prime is 22117679. The reversal of 22117648 is 84671122.

It is not an unprimeable number, because it can be changed into a prime (22117643) 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 3 ways as a sum of consecutive naturals, for example, 98628 + ... + 98851.

It is an arithmetic number, because the mean of its divisors is an integer number (2448752).

Almost surely, 2^22117648 is an apocalyptic number.

22117648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22117648 is an abundant number, since it is smaller than the sum of its proper divisors (26857392).

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

22117648 is a wasteful number, since it uses less digits than its factorization.

22117648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197494 (or 197488 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 22117648 is about 4702.9403568406. The cubic root of 22117648 is about 280.7025216094.

The spelling of 22117648 in words is "twenty-two million, one hundred seventeen thousand, six hundred forty-eight".