422487778 has 16 divisors (see below), whose sum is σ = 655130880. Its totient is φ = 204130800.

The previous prime is 422487763. The next prime is 422487787. The reversal of 422487778 is 877784224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41208 + ... + 50428.

It is an arithmetic number, because the mean of its divisors is an integer number (40945680).

Almost surely, 2^422487778 is an apocalyptic number.

422487778 is a deficient number, since it is larger than the sum of its proper divisors (232643102).

422487778 is a wasteful number, since it uses less digits than its factorization.

422487778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9993.

The product of its digits is 1404928, while the sum is 49.

The square root of 422487778 is about 20554.5074861939. The cubic root of 422487778 is about 750.3629520298.

The spelling of 422487778 in words is "four hundred twenty-two million, four hundred eighty-seven thousand, seven hundred seventy-eight".