22755744 has 108 divisors (see below), whose sum is σ = 71238258. Its totient is φ = 6885120.

The previous prime is 22755743. The next prime is 22755751. The reversal of 22755744 is 44755722.

22755744 = T₃₀₇ + T₃₀₈ + ... + T₅₄₈.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21344400 + 1411344 = 4620^2 + 1188^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22755699 and 22755708.

It is not an unprimeable number, because it can be changed into a prime (22755743) 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, 34522 + ... + 35174.

Almost surely, 2^22755744 is an apocalyptic number.

22755744 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 22755744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35619129).

22755744 is an abundant number, since it is smaller than the sum of its proper divisors (48482514).

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

22755744 is a wasteful number, since it uses less digits than its factorization.

22755744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 669 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 22755744 is about 4770.2981038925. The cubic root of 22755744 is about 283.3764006813.

The spelling of 22755744 in words is "twenty-two million, seven hundred fifty-five thousand, seven hundred forty-four".