22840416 has 72 divisors (see below), whose sum is σ = 65926224. Its totient is φ = 7499520.

The previous prime is 22840393. The next prime is 22840427. The reversal of 22840416 is 61404822.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×22840416³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22840416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19890 + ... + 21006.

It is an arithmetic number, because the mean of its divisors is an integer number (915642).

Almost surely, 2^22840416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22840416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32963112).

22840416 is an abundant number, since it is smaller than the sum of its proper divisors (43085808).

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

22840416 is a wasteful number, since it uses less digits than its factorization.

22840416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1193 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 22840416 is about 4779.1647805867. The cubic root of 22840416 is about 283.7274380296.

The spelling of 22840416 in words is "twenty-two million, eight hundred forty thousand, four hundred sixteen".