22531004 has 6 divisors (see below), whose sum is σ = 39429264. Its totient is φ = 11265500.

The previous prime is 22530997. The next prime is 22531009. The reversal of 22531004 is 40013522.

It is a super-3 number, since 3×22531004³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22531009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2816372 + ... + 2816379.

It is an arithmetic number, because the mean of its divisors is an integer number (6571544).

Almost surely, 2^22531004 is an apocalyptic number.

It is an amenable number.

22531004 is a deficient number, since it is larger than the sum of its proper divisors (16898260).

22531004 is a wasteful number, since it uses less digits than its factorization.

22531004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632755 (or 5632753 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22531004 is about 4746.6834737530. The cubic root of 22531004 is about 282.4404197322.

Adding to 22531004 its reverse (40013522), we get a palindrome (62544526).

The spelling of 22531004 in words is "twenty-two million, five hundred thirty-one thousand, four".