22878372 has 48 divisors (see below), whose sum is σ = 60125184. Its totient is φ = 6708000.

The previous prime is 22878367. The next prime is 22878377. The reversal of 22878372 is 27387822.

It is an interprime number because it is at equal distance from previous prime (22878367) and next prime (22878377).

It is a self number, because there is not a number n which added to its sum of digits gives 22878372.

It is not an unprimeable number, because it can be changed into a prime (22878377) 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 15 ways as a sum of consecutive naturals, for example, 1297 + ... + 6887.

It is an arithmetic number, because the mean of its divisors is an integer number (1252608).

Almost surely, 2^22878372 is an apocalyptic number.

22878372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22878372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30062592).

22878372 is an abundant number, since it is smaller than the sum of its proper divisors (37246812).

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

22878372 is a wasteful number, since it uses less digits than its factorization.

22878372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640 (or 5638 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 22878372 is about 4783.1341189643. The cubic root of 22878372 is about 283.8845162949.

The spelling of 22878372 in words is "twenty-two million, eight hundred seventy-eight thousand, three hundred seventy-two".