22378788 has 48 divisors (see below), whose sum is σ = 58282560. Its totient is φ = 7425792.

The previous prime is 22378787. The next prime is 22378799. The reversal of 22378788 is 88787322.

It is not an unprimeable number, because it can be changed into a prime (22378787) 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, 37831 + ... + 38417.

It is an arithmetic number, because the mean of its divisors is an integer number (1214220).

Almost surely, 2^22378788 is an apocalyptic number.

It is an amenable number.

22378788 is an abundant number, since it is smaller than the sum of its proper divisors (35903772).

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

22378788 is a wasteful number, since it uses less digits than its factorization.

22378788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 945 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 22378788 is about 4730.6223692026. The cubic root of 22378788 is about 281.8029406445.

It can be divided in two parts, 2237 and 8788, that added together give a square (11025 = 105²).

The spelling of 22378788 in words is "twenty-two million, three hundred seventy-eight thousand, seven hundred eighty-eight".