20274009 has 8 divisors (see below), whose sum is σ = 30893760. Its totient is φ = 11585136.

The previous prime is 20273989. The next prime is 20274011. The reversal of 20274009 is 90047202.

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

It is not a de Polignac number, because 20274009 - 2¹¹ = 20271961 is a prime.

It is a super-2 number, since 2×20274009² = 822070881864162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20274009.

It is not an unprimeable number, because it can be changed into a prime (20274019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482694 + ... + 482735.

It is an arithmetic number, because the mean of its divisors is an integer number (3861720).

Almost surely, 2^20274009 is an apocalyptic number.

It is an amenable number.

20274009 is a deficient number, since it is larger than the sum of its proper divisors (10619751).

20274009 is an equidigital number, since it uses as much as digits as its factorization.

20274009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965439.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20274009 is about 4502.6668764189. Note that the first 3 decimals coincide. The cubic root of 20274009 is about 272.6757679810.

The spelling of 20274009 in words is "twenty million, two hundred seventy-four thousand, nine".