22346440 has 16 divisors (see below), whose sum is σ = 50279580. Its totient is φ = 8938560.

The previous prime is 22346419. The next prime is 22346447. The reversal of 22346440 is 4464322.

It can be written as a sum of positive squares in 2 ways, for example, as 21511044 + 835396 = 4638^2 + 914^2 .

It is not an unprimeable number, because it can be changed into a prime (22346447) 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, 279291 + ... + 279370.

Almost surely, 2^22346440 is an apocalyptic number.

22346440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22346440 is an abundant number, since it is smaller than the sum of its proper divisors (27933140).

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

22346440 is a wasteful number, since it uses less digits than its factorization.

22346440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558672 (or 558668 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 22346440 is about 4727.2021323400. The cubic root of 22346440 is about 281.6670953780.

The spelling of 22346440 in words is "twenty-two million, three hundred forty-six thousand, four hundred forty".