22540389 has 8 divisors (see below), whose sum is σ = 30080352. Its totient is φ = 15013680.

The previous prime is 22540387. The next prime is 22540409. The reversal of 22540389 is 98304522.

It is a happy number.

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

It is not a de Polignac number, because 22540389 - 2¹ = 22540387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540387) 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, 1774 + ... + 6944.

It is an arithmetic number, because the mean of its divisors is an integer number (3760044).

Almost surely, 2^22540389 is an apocalyptic number.

It is an amenable number.

22540389 is a deficient number, since it is larger than the sum of its proper divisors (7539963).

22540389 is a wasteful number, since it uses less digits than its factorization.

22540389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 22540389 is about 4747.6719558116. The cubic root of 22540389 is about 282.4796299302.

The spelling of 22540389 in words is "twenty-two million, five hundred forty thousand, three hundred eighty-nine".