22977643 has 8 divisors (see below), whose sum is σ = 24828608. Its totient is φ = 21138624.

The previous prime is 22977641. The next prime is 22977653. The reversal of 22977643 is 34677922.

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

It is not a de Polignac number, because 22977643 - 2¹ = 22977641 is a prime.

It is the 4794-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22977596 and 22977605.

It is not an unprimeable number, because it can be changed into a prime (22977641) by changing a digit.

It is a nontrivial repunit in base 4793.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246 + ... + 6892.

It is an arithmetic number, because the mean of its divisors is an integer number (3103576).

Almost surely, 2^22977643 is an apocalyptic number.

22977643 is a deficient number, since it is larger than the sum of its proper divisors (1850965).

22977643 is a wasteful number, since it uses less digits than its factorization.

22977643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973.

The product of its digits is 127008, while the sum is 40.

The square root of 22977643 is about 4793.5000782309. The cubic root of 22977643 is about 284.2945227009.

The spelling of 22977643 in words is "twenty-two million, nine hundred seventy-seven thousand, six hundred forty-three".