22140947 has 8 divisors (see below), whose sum is σ = 23356560. Its totient is φ = 20930400.

The previous prime is 22140941. The next prime is 22140959. The reversal of 22140947 is 74904122.

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

It is not a de Polignac number, because 22140947 - 2⁴ = 22140931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22140941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10697 + ... + 12597.

It is an arithmetic number, because the mean of its divisors is an integer number (2919570).

Almost surely, 2^22140947 is an apocalyptic number.

22140947 is a deficient number, since it is larger than the sum of its proper divisors (1215613).

22140947 is a wasteful number, since it uses less digits than its factorization.

22140947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 22140947 is about 4705.4167721893. The cubic root of 22140947 is about 280.8010521723.

The spelling of 22140947 in words is "twenty-two million, one hundred forty thousand, nine hundred forty-seven".