22140046 has 4 divisors (see below), whose sum is σ = 33210072. Its totient is φ = 11070022.

The previous prime is 22140029. The next prime is 22140047. The reversal of 22140046 is 64004122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535010 + ... + 5535013.

It is an arithmetic number, because the mean of its divisors is an integer number (8302518).

Almost surely, 2^22140046 is an apocalyptic number.

22140046 is a deficient number, since it is larger than the sum of its proper divisors (11070026).

22140046 is a wasteful number, since it uses less digits than its factorization.

22140046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070025.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 22140046 is about 4705.3210304930. The cubic root of 22140046 is about 280.7972431636.

Adding to 22140046 its reverse (64004122), we get a palindrome (86144168).

The spelling of 22140046 in words is "twenty-two million, one hundred forty thousand, forty-six".