22220572 has 24 divisors (see below), whose sum is σ = 43570800. Its totient is φ = 9826560.

The previous prime is 22220537. The next prime is 22220603. The reversal of 22220572 is 27502222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5197 + ... + 8452.

It is an arithmetic number, because the mean of its divisors is an integer number (1815450).

Almost surely, 2^22220572 is an apocalyptic number.

22220572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22220572 is a deficient number, since it is larger than the sum of its proper divisors (21350228).

22220572 is a wasteful number, since it uses less digits than its factorization.

22220572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13701 (or 13699 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 22220572 is about 4713.8701721621. The cubic root of 22220572 is about 281.1372623383.

Adding to 22220572 its reverse (27502222), we get a palindrome (49722794).

It can be divided in two parts, 22 and 220572, that multiplied together give a palindrome (4852584).

The spelling of 22220572 in words is "twenty-two million, two hundred twenty thousand, five hundred seventy-two".