22430140 has 48 divisors (see below), whose sum is σ = 51250752. Its totient is φ = 8211456.

The previous prime is 22430101. The next prime is 22430153. The reversal of 22430140 is 4103422.

It is a super-2 number, since 2×22430140² = 1006222360839200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11689 + ... + 13471.

It is an arithmetic number, because the mean of its divisors is an integer number (1067724).

Almost surely, 2^22430140 is an apocalyptic number.

22430140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22430140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25625376).

22430140 is an abundant number, since it is smaller than the sum of its proper divisors (28820612).

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

22430140 is a wasteful number, since it uses less digits than its factorization.

22430140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22430140 is about 4736.0468747680. The cubic root of 22430140 is about 282.0183245138.

Adding to 22430140 its reverse (4103422), we get a palindrome (26533562).

The spelling of 22430140 in words is "twenty-two million, four hundred thirty thousand, one hundred forty".