22774642 has 8 divisors (see below), whose sum is σ = 37267632. Its totient is φ = 10352100.

The previous prime is 22774637. The next prime is 22774643. The reversal of 22774642 is 24647722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22774598 and 22774607.

It is not an unprimeable number, because it can be changed into a prime (22774643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517584 + ... + 517627.

It is an arithmetic number, because the mean of its divisors is an integer number (4658454).

Almost surely, 2^22774642 is an apocalyptic number.

22774642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22774642 is a deficient number, since it is larger than the sum of its proper divisors (14492990).

22774642 is a wasteful number, since it uses less digits than its factorization.

22774642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035224.

The product of its digits is 37632, while the sum is 34.

The square root of 22774642 is about 4772.2784914546. The cubic root of 22774642 is about 283.4548243304.

Subtracting 22774642 from its reverse (24647722), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 22774642 in words is "twenty-two million, seven hundred seventy-four thousand, six hundred forty-two".