22039860 has 48 divisors (see below), whose sum is σ = 62306496. Its totient is φ = 5820672.

The previous prime is 22039813. The next prime is 22039861. The reversal of 22039860 is 6893022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22039861) 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, 4704 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (1298052).

Almost surely, 2^22039860 is an apocalyptic number.

22039860 is a gapful number since it is divisible by the number (20) 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 22039860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31153248).

22039860 is an abundant number, since it is smaller than the sum of its proper divisors (40266636).

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

22039860 is a wasteful number, since it uses less digits than its factorization.

22039860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3552 (or 3550 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 22039860 is about 4694.6629271972. The cubic root of 22039860 is about 280.3730571594.

The spelling of 22039860 in words is "twenty-two million, thirty-nine thousand, eight hundred sixty".