20228047 has 8 divisors (see below), whose sum is σ = 23681952. Its totient is φ = 16915200.

The previous prime is 20228041. The next prime is 20228053. The reversal of 20228047 is 74082202.

It is an interprime number because it is at equal distance from previous prime (20228041) and next prime (20228053).

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 20228047 - 2⁷ = 20227919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20228041) 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, 34954 + ... + 35527.

It is an arithmetic number, because the mean of its divisors is an integer number (2960244).

Almost surely, 2^20228047 is an apocalyptic number.

20228047 is a deficient number, since it is larger than the sum of its proper divisors (3453905).

20228047 is an equidigital number, since it uses as much as digits as its factorization.

20228047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70529.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 20228047 is about 4497.5601163297. The cubic root of 20228047 is about 272.4695564003.

The spelling of 20228047 in words is "twenty million, two hundred twenty-eight thousand, forty-seven".