22813040 has 40 divisors (see below), whose sum is σ = 53353728. Its totient is φ = 9071360.

The previous prime is 22813039. The next prime is 22813061. The reversal of 22813040 is 4031822.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a congruent number.

It is an unprimeable number.

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, 14534 + ... + 16026.

Almost surely, 2^22813040 is an apocalyptic number.

22813040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22813040 is an abundant number, since it is smaller than the sum of its proper divisors (30540688).

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

22813040 is a wasteful number, since it uses less digits than its factorization.

22813040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 22813040 is about 4776.2998230848. The cubic root of 22813040 is about 283.6140363056.

Adding to 22813040 its reverse (4031822), we get a palindrome (26844862).

The spelling of 22813040 in words is "twenty-two million, eight hundred thirteen thousand, forty".