22327987 has 16 divisors (see below), whose sum is σ = 26006400. Its totient is φ = 18944640.

The previous prime is 22327957. The next prime is 22328003. The reversal of 22327987 is 78972322.

It is not a de Polignac number, because 22327987 - 2⁷ = 22327859 is a prime.

It is a super-3 number, since 3×22327987³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22327937) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25564 + ... + 26422.

It is an arithmetic number, because the mean of its divisors is an integer number (1625400).

Almost surely, 2^22327987 is an apocalyptic number.

22327987 is the 2363-rd decagonal number.

22327987 is a deficient number, since it is larger than the sum of its proper divisors (3678413).

22327987 is a wasteful number, since it uses less digits than its factorization.

22327987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 84672, while the sum is 40.

The square root of 22327987 is about 4725.2499404793. The cubic root of 22327987 is about 281.5895433647.

The spelling of 22327987 in words is "twenty-two million, three hundred twenty-seven thousand, nine hundred eighty-seven".