20274845 has 8 divisors (see below), whose sum is σ = 25387776. Its totient is φ = 15514576.

The previous prime is 20274833. The next prime is 20274847. The reversal of 20274845 is 54847202.

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 20274845 - 2¹⁰ = 20273821 is a prime.

It is a super-2 number, since 2×20274845² = 822138679548050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20274847) 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, 88037 + ... + 88266.

It is an arithmetic number, because the mean of its divisors is an integer number (3173472).

Almost surely, 2^20274845 is an apocalyptic number.

It is an amenable number.

20274845 is a deficient number, since it is larger than the sum of its proper divisors (5112931).

20274845 is a wasteful number, since it uses less digits than its factorization.

20274845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176331.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 20274845 is about 4502.7597093338. The cubic root of 20274845 is about 272.6795158634.

The spelling of 20274845 in words is "twenty million, two hundred seventy-four thousand, eight hundred forty-five".