22408272 has 40 divisors (see below), whose sum is σ = 64321280. Its totient is φ = 7469280.

The previous prime is 22408247. The next prime is 22408283. The reversal of 22408272 is 27280422.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

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, 25504 + ... + 26367.

It is an arithmetic number, because the mean of its divisors is an integer number (1608032).

Almost surely, 2^22408272 is an apocalyptic number.

It is an amenable number.

22408272 is an abundant number, since it is smaller than the sum of its proper divisors (41913008).

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

22408272 is a wasteful number, since it uses less digits than its factorization.

22408272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51888 (or 51876 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 22408272 is about 4733.7376353152. The cubic root of 22408272 is about 281.9266445687.

Adding to 22408272 its reverse (27280422), we get a palindrome (49688694).

The spelling of 22408272 in words is "twenty-two million, four hundred eight thousand, two hundred seventy-two".