20228277 has 8 divisors (see below), whose sum is σ = 26997120. Its totient is φ = 13472480.

The previous prime is 20228269. The next prime is 20228279. The reversal of 20228277 is 77282202.

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 20228277 - 2³ = 20228269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20228279) 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, 1252 + ... + 6482.

It is an arithmetic number, because the mean of its divisors is an integer number (3374640).

Almost surely, 2^20228277 is an apocalyptic number.

It is an amenable number.

20228277 is a deficient number, since it is larger than the sum of its proper divisors (6768843).

20228277 is a wasteful number, since it uses less digits than its factorization.

20228277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 20228277 is about 4497.5856856763. The cubic root of 20228277 is about 272.4705890880.

The spelling of 20228277 in words is "twenty million, two hundred twenty-eight thousand, two hundred seventy-seven".