22041987 has 16 divisors (see below), whose sum is σ = 32607360. Its totient is φ = 13131200.

The previous prime is 22041983. The next prime is 22041997. The reversal of 22041987 is 78914022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22041987 - 2² = 22041983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (22041983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3714 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (2037960).

Almost surely, 2^22041987 is an apocalyptic number.

22041987 is a deficient number, since it is larger than the sum of its proper divisors (10565373).

22041987 is a wasteful number, since it uses less digits than its factorization.

22041987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11394.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 22041987 is about 4694.8894555676. The cubic root of 22041987 is about 280.3820761869.

The spelling of 22041987 in words is "twenty-two million, forty-one thousand, nine hundred eighty-seven".