22540238 has 8 divisors (see below), whose sum is σ = 38640432. Its totient is φ = 9660096.

The previous prime is 22540237. The next prime is 22540319. The reversal of 22540238 is 83204522.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804995 + ... + 805022.

It is an arithmetic number, because the mean of its divisors is an integer number (4830054).

Almost surely, 2^22540238 is an apocalyptic number.

22540238 is a deficient number, since it is larger than the sum of its proper divisors (16100194).

22540238 is a wasteful number, since it uses less digits than its factorization.

22540238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610026.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 22540238 is about 4747.6560532541. The cubic root of 22540238 is about 282.4789991437.

The spelling of 22540238 in words is "twenty-two million, five hundred forty thousand, two hundred thirty-eight".