22049118 has 96 divisors (see below), whose sum is σ = 61477920. Its totient is φ = 5806080.

The previous prime is 22049117. The next prime is 22049141. The reversal of 22049118 is 81194022.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22049091 and 22049100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22049117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34078 + ... + 34718.

It is an arithmetic number, because the mean of its divisors is an integer number (640395).

Almost surely, 2^22049118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22049118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30738960).

22049118 is an abundant number, since it is smaller than the sum of its proper divisors (39428802).

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

22049118 is a wasteful number, since it uses less digits than its factorization.

22049118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 22049118 is about 4695.6488369553. The cubic root of 22049118 is about 280.4123092297.

The spelling of 22049118 in words is "twenty-two million, forty-nine thousand, one hundred eighteen".