18772022 has 8 divisors (see below), whose sum is σ = 28448616. Its totient is φ = 9289152.

The previous prime is 18772021. The next prime is 18772031. The reversal of 18772022 is 22027781.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18772021) 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, 48188 + ... + 48575.

It is an arithmetic number, because the mean of its divisors is an integer number (3556077).

Almost surely, 2^18772022 is an apocalyptic number.

18772022 is a deficient number, since it is larger than the sum of its proper divisors (9676594).

18772022 is an equidigital number, since it uses as much as digits as its factorization.

18772022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96862.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 18772022 is about 4332.6691542281. The cubic root of 18772022 is about 265.7686099005.

The spelling of 18772022 in words is "eighteen million, seven hundred seventy-two thousand, twenty-two".