22777748 has 36 divisors (see below), whose sum is σ = 46654272. Its totient is φ = 9702000.

The previous prime is 22777747. The next prime is 22777753. The reversal of 22777748 is 84777722.

22777748 is nontrivially palindromic in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 22777699 and 22777708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22777747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48965 + ... + 49427.

It is an arithmetic number, because the mean of its divisors is an integer number (1295952).

Almost surely, 2^22777748 is an apocalyptic number.

22777748 is a gapful number since it is divisible by the number (28) 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 22777748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23327136).

22777748 is an abundant number, since it is smaller than the sum of its proper divisors (23876524).

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

22777748 is a wasteful number, since it uses less digits than its factorization.

22777748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 723 counting only the distinct ones).

The product of its digits is 307328, while the sum is 44.

The square root of 22777748 is about 4772.6039014358. The cubic root of 22777748 is about 283.4677095774.

The spelling of 22777748 in words is "twenty-two million, seven hundred seventy-seven thousand, seven hundred forty-eight".