22839478 has 8 divisors (see below), whose sum is σ = 34279560. Its totient is φ = 11412960.

The previous prime is 22839469. The next prime is 22839491. The reversal of 22839478 is 87493822.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4413 + ... + 8071.

It is an arithmetic number, because the mean of its divisors is an integer number (4284945).

Almost surely, 2^22839478 is an apocalyptic number.

22839478 is a deficient number, since it is larger than the sum of its proper divisors (11440082).

22839478 is a wasteful number, since it uses less digits than its factorization.

22839478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6782.

The product of its digits is 193536, while the sum is 43.

The square root of 22839478 is about 4779.0666452771. The cubic root of 22839478 is about 283.7235539792.

The spelling of 22839478 in words is "twenty-two million, eight hundred thirty-nine thousand, four hundred seventy-eight".