22878443 has 8 divisors (see below), whose sum is σ = 26680800. Its totient is φ = 19609800.

The previous prime is 22878439. The next prime is 22878467. The reversal of 22878443 is 34487822.

It is a happy number.

It is not a de Polignac number, because 22878443 - 2² = 22878439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22878397 and 22878406.

It is not an unprimeable number, because it can be changed into a prime (22878043) 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, 33008 + ... + 33693.

It is an arithmetic number, because the mean of its divisors is an integer number (3335100).

Almost surely, 2^22878443 is an apocalyptic number.

22878443 is a deficient number, since it is larger than the sum of its proper divisors (3802357).

22878443 is an frugal number, since it uses more digits than its factorization.

22878443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66722 (or 66708 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 22878443 is about 4783.1415408704. The cubic root of 22878443 is about 283.8848099606.

The spelling of 22878443 in words is "twenty-two million, eight hundred seventy-eight thousand, four hundred forty-three".