22730140 has 24 divisors (see below), whose sum is σ = 48750912. Its totient is φ = 8898240.

The previous prime is 22730119. The next prime is 22730159. The reversal of 22730140 is 4103722.

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, 11151 + ... + 13030.

It is an arithmetic number, because the mean of its divisors is an integer number (2031288).

Almost surely, 2^22730140 is an apocalyptic number.

22730140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22730140 is an abundant number, since it is smaller than the sum of its proper divisors (26020772).

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

22730140 is a wasteful number, since it uses less digits than its factorization.

22730140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24237 (or 24235 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 22730140 is about 4767.6136588444. The cubic root of 22730140 is about 283.2700789206.

Adding to 22730140 its reverse (4103722), we get a palindrome (26833862).

The spelling of 22730140 in words is "twenty-two million, seven hundred thirty thousand, one hundred forty".