20266045 has 8 divisors (see below), whose sum is σ = 24353280. Its totient is φ = 16190160.

The previous prime is 20266039. The next prime is 20266063. The reversal of 20266045 is 54066202.

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

It is not a de Polignac number, because 20266045 - 2¹⁷ = 20134973 is a prime.

It is a super-4 number, since 4×20266045⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent 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, 1780 + ... + 6610.

It is an arithmetic number, because the mean of its divisors is an integer number (3044160).

Almost surely, 2^20266045 is an apocalyptic number.

It is an amenable number.

20266045 is a deficient number, since it is larger than the sum of its proper divisors (4087235).

20266045 is an equidigital number, since it uses as much as digits as its factorization.

20266045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5675.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20266045 is about 4501.7824247735. The cubic root of 20266045 is about 272.6400593022.

The spelling of 20266045 in words is "twenty million, two hundred sixty-six thousand, forty-five".