22432861 has 4 divisors (see below), whose sum is σ = 24472224. Its totient is φ = 20393500.

The previous prime is 22432859. The next prime is 22432913. The reversal of 22432861 is 16823422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22432861 - 2¹ = 22432859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22432801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019665 + ... + 1019686.

It is an arithmetic number, because the mean of its divisors is an integer number (6118056).

Almost surely, 2^22432861 is an apocalyptic number.

It is an amenable number.

22432861 is a deficient number, since it is larger than the sum of its proper divisors (2039363).

22432861 is a wasteful number, since it uses less digits than its factorization.

22432861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039362.

The product of its digits is 4608, while the sum is 28.

The square root of 22432861 is about 4736.3341309498. The cubic root of 22432861 is about 282.0297279325.

Subtracting from 22432861 its product of digits (4608), we obtain a triangular number (22428253 = T₆₆₉₇).

The spelling of 22432861 in words is "twenty-two million, four hundred thirty-two thousand, eight hundred sixty-one".