22273888 has 48 divisors (see below), whose sum is σ = 53978400. Its totient is φ = 8810496.

The previous prime is 22273883. The next prime is 22273891. The reversal of 22273888 is 88837222.

It is a happy number.

It is a super-2 number, since 2×22273888² = 992252173273088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22273888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22273883) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913 + ... + 6736.

It is an arithmetic number, because the mean of its divisors is an integer number (1124550).

Almost surely, 2^22273888 is an apocalyptic number.

22273888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22273888 is an abundant number, since it is smaller than the sum of its proper divisors (31704512).

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

22273888 is a wasteful number, since it uses less digits than its factorization.

22273888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679 (or 7671 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 22273888 is about 4719.5220096955. The cubic root of 22273888 is about 281.3619361519.

The spelling of 22273888 in words is "twenty-two million, two hundred seventy-three thousand, eight hundred eighty-eight".