22450340 has 36 divisors (see below), whose sum is σ = 51826908. Its totient is φ = 8162880.

The previous prime is 22450333. The next prime is 22450361. The reversal of 22450340 is 4305422.

It can be written as a sum of positive squares in 2 ways, for example, as 13498276 + 8952064 = 3674^2 + 2992^2 .

It is a super-2 number, since 2×22450340² = 1008035532231200, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2219 + ... + 7058.

Almost surely, 2^22450340 is an apocalyptic number.

22450340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22450340 is an abundant number, since it is smaller than the sum of its proper divisors (29376568).

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

22450340 is a wasteful number, since it uses less digits than its factorization.

22450340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9308 (or 9295 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 22450340 is about 4738.1789750916. The cubic root of 22450340 is about 282.1029585656.

Adding to 22450340 its reverse (4305422), we get a palindrome (26755762).

The spelling of 22450340 in words is "twenty-two million, four hundred fifty thousand, three hundred forty".