22050072 has 72 divisors (see below), whose sum is σ = 65667420. Its totient is φ = 6679200.

The previous prime is 22050059. The next prime is 22050079. The reversal of 22050072 is 27005022.

It is a happy number.

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

It is a hoax number, since the sum of its digits (18) 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 (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22050079) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7447 + ... + 9977.

Almost surely, 2^22050072 is an apocalyptic number.

22050072 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 22050072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32833710).

22050072 is an abundant number, since it is smaller than the sum of its proper divisors (43617348).

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

22050072 is a wasteful number, since it uses less digits than its factorization.

22050072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565 (or 2547 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 22050072 is about 4695.7504192621. The cubic root of 22050072 is about 280.4163533746.

Adding to 22050072 its reverse (27005022), we get a palindrome (49055094).

The spelling of 22050072 in words is "twenty-two million, fifty thousand, seventy-two".