22041780 has 48 divisors (see below), whose sum is σ = 62282304. Its totient is φ = 5824000.

The previous prime is 22041763. The next prime is 22041781. The reversal of 22041780 is 8714022.

It is a self number, because there is not a number n which added to its sum of digits gives 22041780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22041781) 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, 5155 + ... + 8405.

It is an arithmetic number, because the mean of its divisors is an integer number (1297548).

Almost surely, 2^22041780 is an apocalyptic number.

22041780 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 22041780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31141152).

22041780 is an abundant number, since it is smaller than the sum of its proper divisors (40240524).

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

22041780 is a wasteful number, since it uses less digits than its factorization.

22041780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376 (or 3374 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 22041780 is about 4694.8674102684. The cubic root of 22041780 is about 280.3811984791.

The spelling of 22041780 in words is "twenty-two million, forty-one thousand, seven hundred eighty".