22149785 has 8 divisors (see below), whose sum is σ = 30376896. Its totient is φ = 15188400.

The previous prime is 22149769. The next prime is 22149797. The reversal of 22149785 is 58794122.

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

It is not a de Polignac number, because 22149785 - 2⁴ = 22149769 is a prime.

It is a super-2 number, since 2×22149785² = 981225951092450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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, 316391 + ... + 316460.

It is an arithmetic number, because the mean of its divisors is an integer number (3797112).

Almost surely, 2^22149785 is an apocalyptic number.

It is an amenable number.

22149785 is a deficient number, since it is larger than the sum of its proper divisors (8227111).

22149785 is an equidigital number, since it uses as much as digits as its factorization.

22149785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632863.

The product of its digits is 40320, while the sum is 38.

The square root of 22149785 is about 4706.3558089035. The cubic root of 22149785 is about 280.8384096464.

The spelling of 22149785 in words is "twenty-two million, one hundred forty-nine thousand, seven hundred eighty-five".