22451289 has 48 divisors (see below), whose sum is σ = 37373952. Its totient is φ = 11731104.

The previous prime is 22451287. The next prime is 22451291. The reversal of 22451289 is 98215422.

It is an interprime number because it is at equal distance from previous prime (22451287) and next prime (22451291).

It is not a de Polignac number, because 22451289 - 2¹ = 22451287 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22451287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 477664 + ... + 477710.

It is an arithmetic number, because the mean of its divisors is an integer number (778624).

Almost surely, 2^22451289 is an apocalyptic number.

It is an amenable number.

22451289 is a deficient number, since it is larger than the sum of its proper divisors (14922663).

22451289 is a wasteful number, since it uses less digits than its factorization.

22451289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 123 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 22451289 is about 4738.2791179921. The cubic root of 22451289 is about 282.1069334413.

The spelling of 22451289 in words is "twenty-two million, four hundred fifty-one thousand, two hundred eighty-nine".