22191404 has 6 divisors (see below), whose sum is σ = 38834964. Its totient is φ = 11095700.

The previous prime is 22191401. The next prime is 22191427. The reversal of 22191404 is 40419122.

It is a super-2 number, since 2×22191404² = 984916822982432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22191404.

It is not an unprimeable number, because it can be changed into a prime (22191401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2773922 + ... + 2773929.

It is an arithmetic number, because the mean of its divisors is an integer number (6472494).

Almost surely, 2^22191404 is an apocalyptic number.

It is an amenable number.

22191404 is a deficient number, since it is larger than the sum of its proper divisors (16643560).

22191404 is a wasteful number, since it uses less digits than its factorization.

22191404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5547855 (or 5547853 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 22191404 is about 4710.7753077386. The cubic root of 22191404 is about 281.0141961648.

The spelling of 22191404 in words is "twenty-two million, one hundred ninety-one thousand, four hundred four".