20872274 has 8 divisors (see below), whose sum is σ = 31704960. Its totient is φ = 10303956.

The previous prime is 20872273. The next prime is 20872307. The reversal of 20872274 is 47227802.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20872274.

It is not an unprimeable number, because it can be changed into a prime (20872273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65894 + ... + 66209.

It is an arithmetic number, because the mean of its divisors is an integer number (3963120).

Almost surely, 2^20872274 is an apocalyptic number.

20872274 is a deficient number, since it is larger than the sum of its proper divisors (10832686).

20872274 is a wasteful number, since it uses less digits than its factorization.

20872274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132184.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 20872274 is about 4568.6183907173. The cubic root of 20872274 is about 275.3319363680.

The spelling of 20872274 in words is "twenty million, eight hundred seventy-two thousand, two hundred seventy-four".