22051536 has 40 divisors (see below), whose sum is σ = 61350240. Its totient is φ = 6784896.

The previous prime is 22051531. The next prime is 22051537. The reversal of 22051536 is 63515022.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22051531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17046 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (1533756).

Almost surely, 2^22051536 is an apocalyptic number.

22051536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22051536 is an abundant number, since it is smaller than the sum of its proper divisors (39298704).

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

22051536 is a wasteful number, since it uses less digits than its factorization.

22051536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35363 (or 35357 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 22051536 is about 4695.9063023020. The cubic root of 22051536 is about 280.4225592570.

Adding to 22051536 its reverse (63515022), we get a palindrome (85566558).

It can be divided in two parts, 2205 and 1536, that added together give a triangular number (3741 = T₈₆).

The spelling of 22051536 in words is "twenty-two million, fifty-one thousand, five hundred thirty-six".