22878533 has 8 divisors (see below), whose sum is σ = 23501016. Its totient is φ = 22259200.

The previous prime is 22878529. The next prime is 22878539. The reversal of 22878533 is 33587822.

It can be written as a sum of positive squares in 4 ways, for example, as 1181569 + 21696964 = 1087^2 + 4658^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22878533 - 2² = 22878529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22878539) 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, 23843 + ... + 24783.

It is an arithmetic number, because the mean of its divisors is an integer number (2937627).

Almost surely, 2^22878533 is an apocalyptic number.

It is an amenable number.

22878533 is a deficient number, since it is larger than the sum of its proper divisors (622483).

22878533 is an equidigital number, since it uses as much as digits as its factorization.

22878533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575.

The product of its digits is 80640, while the sum is 38.

The square root of 22878533 is about 4783.1509489039. The cubic root of 22878533 is about 283.8851822121.

The spelling of 22878533 in words is "twenty-two million, eight hundred seventy-eight thousand, five hundred thirty-three".