22273480 has 32 divisors (see below), whose sum is σ = 50869440. Its totient is φ = 8775360.

The previous prime is 22273439. The next prime is 22273483. The reversal of 22273480 is 8437222.

It is a super-2 number, since 2×22273480² = 992215822620800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22273483) 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, 1476 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (1589670).

Almost surely, 2^22273480 is an apocalyptic number.

22273480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22273480 is an abundant number, since it is smaller than the sum of its proper divisors (28595960).

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

22273480 is a wasteful number, since it uses less digits than its factorization.

22273480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8389 (or 8385 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 22273480 is about 4719.4787847812. The cubic root of 22273480 is about 281.3602182005.

The spelling of 22273480 in words is "twenty-two million, two hundred seventy-three thousand, four hundred eighty".