22773145 has 8 divisors (see below), whose sum is σ = 27909504. Its totient is φ = 17830704.

The previous prime is 22773139. The next prime is 22773173. The reversal of 22773145 is 54137722.

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

It is a cyclic number.

It is not a de Polignac number, because 22773145 - 2¹⁹ = 22248857 is a prime.

It is a super-2 number, since 2×22773145² = 1037232266382050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48219 + ... + 48688.

It is an arithmetic number, because the mean of its divisors is an integer number (3488688).

Almost surely, 2^22773145 is an apocalyptic number.

It is an amenable number.

22773145 is a deficient number, since it is larger than the sum of its proper divisors (5136359).

22773145 is an equidigital number, since it uses as much as digits as its factorization.

22773145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96959.

The product of its digits is 11760, while the sum is 31.

The square root of 22773145 is about 4772.1216455577. The cubic root of 22773145 is about 283.4486136046.

The spelling of 22773145 in words is "twenty-two million, seven hundred seventy-three thousand, one hundred forty-five".