22779354 has 64 divisors (see below), whose sum is σ = 53343360. Its totient is φ = 6420480.

The previous prime is 22779343. The next prime is 22779359. The reversal of 22779354 is 45397722.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (22779359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54157 + ... + 54575.

It is an arithmetic number, because the mean of its divisors is an integer number (833490).

Almost surely, 2^22779354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22779354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26671680).

22779354 is an abundant number, since it is smaller than the sum of its proper divisors (30564006).

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

22779354 is a wasteful number, since it uses less digits than its factorization.

22779354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495.

The product of its digits is 105840, while the sum is 39.

The square root of 22779354 is about 4772.7721504384. The cubic root of 22779354 is about 283.4743716121.

It can be divided in two parts, 22 and 779354, that added together give a triangular number (779376 = T₁₂₄₈).

The spelling of 22779354 in words is "twenty-two million, seven hundred seventy-nine thousand, three hundred fifty-four".