22361004 has 18 divisors (see below), whose sum is σ = 56523740. Its totient is φ = 7453656.

The previous prime is 22360997. The next prime is 22361011. The reversal of 22361004 is 40016322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22360997) and next prime (22361011).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 310534 + ... + 310605.

Almost surely, 2^22361004 is an apocalyptic number.

It is an amenable number.

22361004 is an abundant number, since it is smaller than the sum of its proper divisors (34162736).

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

22361004 is a wasteful number, since it uses less digits than its factorization.

22361004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621149 (or 621144 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22361004 is about 4728.7423275116. The cubic root of 22361004 is about 281.7282730379.

Adding to 22361004 its reverse (40016322), we get a palindrome (62377326).

It can be divided in two parts, 2236 and 1004, that added together give a triangular number (3240 = T₈₀).

The spelling of 22361004 in words is "twenty-two million, three hundred sixty-one thousand, four".