20877222 has 8 divisors (see below), whose sum is σ = 41754456. Its totient is φ = 6959072.

The previous prime is 20877221. The next prime is 20877223. The reversal of 20877222 is 22277802.

It is an interprime number because it is at equal distance from previous prime (20877221) and next prime (20877223).

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

20877222 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 20877222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20877221) 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, 1739763 + ... + 1739774.

It is an arithmetic number, because the mean of its divisors is an integer number (5219307).

Almost surely, 2^20877222 is an apocalyptic number.

20877222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20877222 is a wasteful number, since it uses less digits than its factorization.

20877222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479542.

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

The square root of 20877222 is about 4569.1598790150. The cubic root of 20877222 is about 275.3536914609.

The spelling of 20877222 in words is "twenty million, eight hundred seventy-seven thousand, two hundred twenty-two".