22878500 has 24 divisors (see below), whose sum is σ = 49967736. Its totient is φ = 9151200.

The previous prime is 22878497. The next prime is 22878509. The reversal of 22878500 is 587822.

It can be written as a sum of positive squares in 4 ways, for example, as 3182656 + 19695844 = 1784^2 + 4438^2 .

It is not an unprimeable number, because it can be changed into a prime (22878509) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22379 + ... + 23378.

It is an arithmetic number, because the mean of its divisors is an integer number (2081989).

Almost surely, 2^22878500 is an apocalyptic number.

22878500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22878500 is an abundant number, since it is smaller than the sum of its proper divisors (27089236).

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

22878500 is a wasteful number, since it uses less digits than its factorization.

22878500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45776 (or 45764 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 22878500 is about 4783.1474992937. The cubic root of 22878500 is about 283.8850457200.

The spelling of 22878500 in words is "twenty-two million, eight hundred seventy-eight thousand, five hundred".