22378380 has 24 divisors (see below), whose sum is σ = 62659632. Its totient is φ = 5967552.

The previous prime is 22378357. The next prime is 22378381. The reversal of 22378380 is 8387322.

It is a happy number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (22378381) 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, 186427 + ... + 186546.

It is an arithmetic number, because the mean of its divisors is an integer number (2610818).

Almost surely, 2^22378380 is an apocalyptic number.

22378380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22378380 is an abundant number, since it is smaller than the sum of its proper divisors (40281252).

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

22378380 is a wasteful number, since it uses less digits than its factorization.

22378380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372985 (or 372983 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 22378380 is about 4730.5792457161. The cubic root of 22378380 is about 281.8012280660.

The spelling of 22378380 in words is "twenty-two million, three hundred seventy-eight thousand, three hundred eighty".