22773744 has 160 divisors (see below), whose sum is σ = 79280640. Its totient is φ = 6110208.

The previous prime is 22773743. The next prime is 22773781. The reversal of 22773744 is 44737722.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 22773699 and 22773708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22773743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51187 + ... + 51629.

It is an arithmetic number, because the mean of its divisors is an integer number (495504).

Almost surely, 2^22773744 is an apocalyptic number.

22773744 is a gapful number since it is divisible by the number (24) 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 22773744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39640320).

22773744 is an abundant number, since it is smaller than the sum of its proper divisors (56506896).

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

22773744 is a wasteful number, since it uses less digits than its factorization.

22773744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 472 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 22773744 is about 4772.1844054898. The cubic root of 22773744 is about 283.4510987573.

The spelling of 22773744 in words is "twenty-two million, seven hundred seventy-three thousand, seven hundred forty-four".