22619940 has 48 divisors (see below), whose sum is σ = 72385152. Its totient is φ = 5170176.

The previous prime is 22619929. The next prime is 22619953. The reversal of 22619940 is 4991622.

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 15 ways as a sum of consecutive naturals, for example, 26509 + ... + 27348.

It is an arithmetic number, because the mean of its divisors is an integer number (1508024).

Almost surely, 2^22619940 is an apocalyptic number.

22619940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22619940 is an abundant number, since it is smaller than the sum of its proper divisors (49765212).

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

22619940 is a wasteful number, since it uses less digits than its factorization.

22619940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53876 (or 53874 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 22619940 is about 4756.0424724765. The cubic root of 22619940 is about 282.8115548843.

The spelling of 22619940 in words is "twenty-two million, six hundred nineteen thousand, nine hundred forty".