22448987 has 8 divisors (see below), whose sum is σ = 25334640. Its totient is φ = 19704160.

The previous prime is 22448981. The next prime is 22449041. The reversal of 22448987 is 78984422.

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

It is a cyclic number.

It is not a de Polignac number, because 22448987 - 2⁸ = 22448731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22448981) 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, 34868 + ... + 35505.

It is an arithmetic number, because the mean of its divisors is an integer number (3166830).

Almost surely, 2^22448987 is an apocalyptic number.

22448987 is a deficient number, since it is larger than the sum of its proper divisors (2885653).

22448987 is a wasteful number, since it uses less digits than its factorization.

22448987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70413.

The product of its digits is 258048, while the sum is 44.

The square root of 22448987 is about 4738.0361965692. The cubic root of 22448987 is about 282.0972913467.

The spelling of 22448987 in words is "twenty-two million, four hundred forty-eight thousand, nine hundred eighty-seven".