422027781 has 16 divisors (see below), whose sum is σ = 646360704. Its totient is φ = 239932224.

The previous prime is 422027777. The next prime is 422027833. The reversal of 422027781 is 187720224.

It is not a de Polignac number, because 422027781 - 2² = 422027777 is a prime.

It is a super-2 number, since 2×422027781² = 356214895871567922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422027761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46870 + ... + 55143.

It is an arithmetic number, because the mean of its divisors is an integer number (40397544).

Almost surely, 2^422027781 is an apocalyptic number.

It is an amenable number.

422027781 is a deficient number, since it is larger than the sum of its proper divisors (224332923).

422027781 is a wasteful number, since it uses less digits than its factorization.

422027781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102220.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 422027781 is about 20543.3147520063. The cubic root of 422027781 is about 750.0905259618.

The spelling of 422027781 in words is "four hundred twenty-two million, twenty-seven thousand, seven hundred eighty-one".