22087018 has 8 divisors (see below), whose sum is σ = 33248448. Its totient is φ = 11004204.

The previous prime is 22087007. The next prime is 22087033. The reversal of 22087018 is 81078022.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18946 + ... + 20077.

It is an arithmetic number, because the mean of its divisors is an integer number (4156056).

Almost surely, 2^22087018 is an apocalyptic number.

22087018 is a deficient number, since it is larger than the sum of its proper divisors (11161430).

22087018 is a wasteful number, since it uses less digits than its factorization.

22087018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39308.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 22087018 is about 4699.6827552506. The cubic root of 22087018 is about 280.5728831975.

The spelling of 22087018 in words is "twenty-two million, eighty-seven thousand, eighteen".