22431430 has 16 divisors (see below), whose sum is σ = 46144800. Its totient is φ = 7690752.

The previous prime is 22431427. The next prime is 22431433. The reversal of 22431430 is 3413422.

It is an interprime number because it is at equal distance from previous prime (22431427) and next prime (22431433).

It is a junction number, because it is equal to n+sod(n) for n = 22431398 and 22431407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431433) 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, 160155 + ... + 160294.

It is an arithmetic number, because the mean of its divisors is an integer number (2884050).

Almost surely, 2^22431430 is an apocalyptic number.

22431430 is an abundant number, since it is smaller than the sum of its proper divisors (23713370).

22431430 is a wasteful number, since it uses less digits than its factorization.

22431430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320463.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 22431430 is about 4736.1830623404. The cubic root of 22431430 is about 282.0237308802.

Adding to 22431430 its reverse (3413422), we get a palindrome (25844852).

The spelling of 22431430 in words is "twenty-two million, four hundred thirty-one thousand, four hundred thirty".