22350440 has 32 divisors (see below), whose sum is σ = 57473280. Its totient is φ = 7662912.

The previous prime is 22350437. The next prime is 22350451. The reversal of 22350440 is 4405322.

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 7 ways as a sum of consecutive naturals, for example, 39632 + ... + 40191.

It is an arithmetic number, because the mean of its divisors is an integer number (1796040).

Almost surely, 2^22350440 is an apocalyptic number.

22350440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22350440 is an abundant number, since it is smaller than the sum of its proper divisors (35122840).

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

22350440 is a wasteful number, since it uses less digits than its factorization.

22350440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79841 (or 79837 counting only the distinct ones).

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

The square root of 22350440 is about 4727.6251966500. The cubic root of 22350440 is about 281.6839004585.

Adding to 22350440 its reverse (4405322), we get a palindrome (26755762).

The spelling of 22350440 in words is "twenty-two million, three hundred fifty thousand, four hundred forty".