22329987 has 8 divisors (see below), whose sum is σ = 31067904. Its totient is φ = 14239368.

The previous prime is 22329977. The next prime is 22329991. The reversal of 22329987 is 78992322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22329987 - 2¹¹ = 22327939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22329917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161743 + ... + 161880.

It is an arithmetic number, because the mean of its divisors is an integer number (3883488).

Almost surely, 2^22329987 is an apocalyptic number.

22329987 is a deficient number, since it is larger than the sum of its proper divisors (8737917).

22329987 is a wasteful number, since it uses less digits than its factorization.

22329987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323649.

The product of its digits is 108864, while the sum is 42.

The square root of 22329987 is about 4725.4615647575. The cubic root of 22329987 is about 281.5979507844.

The spelling of 22329987 in words is "twenty-two million, three hundred twenty-nine thousand, nine hundred eighty-seven".