22040643 has 8 divisors (see below), whose sum is σ = 29536000. Its totient is φ = 14619528.

The previous prime is 22040621. The next prime is 22040663. The reversal of 22040643 is 34604022.

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

It is not a de Polignac number, because 22040643 - 2¹⁴ = 22024259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22040663) 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, 17863 + ... + 19056.

It is an arithmetic number, because the mean of its divisors is an integer number (3692000).

Almost surely, 2^22040643 is an apocalyptic number.

22040643 is a deficient number, since it is larger than the sum of its proper divisors (7495357).

22040643 is a wasteful number, since it uses less digits than its factorization.

22040643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37121.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 22040643 is about 4694.7463190251. The cubic root of 22040643 is about 280.3763773485.

Adding to 22040643 its reverse (34604022), we get a palindrome (56644665).

The spelling of 22040643 in words is "twenty-two million, forty thousand, six hundred forty-three".