22838478 has 16 divisors (see below), whose sum is σ = 49190736. Its totient is φ = 7027200.

The previous prime is 22838477. The next prime is 22838479. The reversal of 22838478 is 87483822.

It is an interprime number because it is at equal distance from previous prime (22838477) and next prime (22838479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22838477) 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, 146323 + ... + 146478.

It is an arithmetic number, because the mean of its divisors is an integer number (3074421).

Almost surely, 2^22838478 is an apocalyptic number.

22838478 is an abundant number, since it is smaller than the sum of its proper divisors (26352258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22838478 is a wasteful number, since it uses less digits than its factorization.

22838478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292819.

The product of its digits is 172032, while the sum is 42.

The square root of 22838478 is about 4778.9620211925. The cubic root of 22838478 is about 283.7194130834.

The spelling of 22838478 in words is "twenty-two million, eight hundred thirty-eight thousand, four hundred seventy-eight".