22120487 has 8 divisors (see below), whose sum is σ = 22777200. Its totient is φ = 21466944.

The previous prime is 22120477. The next prime is 22120493. The reversal of 22120487 is 78402122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120477) 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, 26939 + ... + 27747.

It is an arithmetic number, because the mean of its divisors is an integer number (2847150).

Almost surely, 2^22120487 is an apocalyptic number.

22120487 is a deficient number, since it is larger than the sum of its proper divisors (656713).

22120487 is an equidigital number, since it uses as much as digits as its factorization.

22120487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 22120487 is about 4703.2421796033. The cubic root of 22120487 is about 280.7145313307.

The spelling of 22120487 in words is "twenty-two million, one hundred twenty thousand, four hundred eighty-seven".