22328780 has 12 divisors (see below), whose sum is σ = 46890480. Its totient is φ = 8931504.

The previous prime is 22328771. The next prime is 22328783. The reversal of 22328780 is 8782322.

It is a super-3 number, since 3×22328780³ (a number of 23 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22328783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558200 + ... + 558239.

It is an arithmetic number, because the mean of its divisors is an integer number (3907540).

Almost surely, 2^22328780 is an apocalyptic number.

22328780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22328780 is an abundant number, since it is smaller than the sum of its proper divisors (24561700).

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

22328780 is a wasteful number, since it uses less digits than its factorization.

22328780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116448 (or 1116446 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 22328780 is about 4725.3338506396. Note that the first 3 decimals coincide. The cubic root of 22328780 is about 281.5928769666.

The spelling of 22328780 in words is "twenty-two million, three hundred twenty-eight thousand, seven hundred eighty".