22132878 has 32 divisors (see below), whose sum is σ = 47373984. Its totient is φ = 6868992.

The previous prime is 22132871. The next prime is 22132879. The reversal of 22132878 is 87823122.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8776 + ... + 11012.

It is an arithmetic number, because the mean of its divisors is an integer number (1480437).

Almost surely, 2^22132878 is an apocalyptic number.

22132878 is an abundant number, since it is smaller than the sum of its proper divisors (25241106).

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

22132878 is a wasteful number, since it uses less digits than its factorization.

22132878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356.

The product of its digits is 10752, while the sum is 33.

The square root of 22132878 is about 4704.5592779771. The cubic root of 22132878 is about 280.7669365133.

The spelling of 22132878 in words is "twenty-two million, one hundred thirty-two thousand, eight hundred seventy-eight".