22773447 has 8 divisors (see below), whose sum is σ = 33738480. Its totient is φ = 15182280.

The previous prime is 22773407. The next prime is 22773461. The reversal of 22773447 is 74437722.

It is not a de Polignac number, because 22773447 - 2⁶ = 22773383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22773407) 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 7 ways as a sum of consecutive naturals, for example, 421704 + ... + 421757.

It is an arithmetic number, because the mean of its divisors is an integer number (4217310).

Almost surely, 2^22773447 is an apocalyptic number.

22773447 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22773447 is a deficient number, since it is larger than the sum of its proper divisors (10965033).

22773447 is an equidigital number, since it uses as much as digits as its factorization.

22773447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843470 (or 843464 counting only the distinct ones).

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

The square root of 22773447 is about 4772.1532875632. The cubic root of 22773447 is about 283.4498665585.

It can be divided in two parts, 22773 and 447, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 22773447 in words is "twenty-two million, seven hundred seventy-three thousand, four hundred forty-seven".