422882728 has 8 divisors (see below), whose sum is σ = 792905130. Its totient is φ = 211441360.

The previous prime is 422882693. The next prime is 422882729. The reversal of 422882728 is 827288224.

It can be written as a sum of positive squares in only one way, i.e., 273505444 + 149377284 = 16538^2 + 12222^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (422882729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26430163 + ... + 26430178.

Almost surely, 2^422882728 is an apocalyptic number.

It is an amenable number.

422882728 is a deficient number, since it is larger than the sum of its proper divisors (370022402).

422882728 is a wasteful number, since it uses less digits than its factorization.

422882728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52860347 (or 52860343 counting only the distinct ones).

The product of its digits is 229376, while the sum is 43.

The square root of 422882728 is about 20564.1126236947. The cubic root of 422882728 is about 750.5966972920.

The spelling of 422882728 in words is "four hundred twenty-two million, eight hundred eighty-two thousand, seven hundred twenty-eight".