22432340 has 24 divisors (see below), whose sum is σ = 53837952. Its totient is φ = 7691040.

The previous prime is 22432339. The next prime is 22432349. The reversal of 22432340 is 4323422.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22432349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79976 + ... + 80255.

It is an arithmetic number, because the mean of its divisors is an integer number (2243248).

Almost surely, 2^22432340 is an apocalyptic number.

22432340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22432340 is an abundant number, since it is smaller than the sum of its proper divisors (31405612).

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

22432340 is a wasteful number, since it uses less digits than its factorization.

22432340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160247 (or 160245 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 22432340 is about 4736.2791302878. The cubic root of 22432340 is about 282.0275445489.

Adding to 22432340 its reverse (4323422), we get a palindrome (26755762).

It can be divided in two parts, 2 and 2432340, that added together give a palindrome (2432342).

The spelling of 22432340 in words is "twenty-two million, four hundred thirty-two thousand, three hundred forty".