422188240 has 40 divisors (see below), whose sum is σ = 983238408. Its totient is φ = 168591360.

The previous prime is 422188231. The next prime is 422188243. The reversal of 422188240 is 42881224.

It can be written as a sum of positive squares in 4 ways, for example, as 61340224 + 360848016 = 7832^2 + 18996^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422188243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47164 + ... + 55396.

Almost surely, 2^422188240 is an apocalyptic number.

422188240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422188240 is an abundant number, since it is smaller than the sum of its proper divisors (561050168).

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

422188240 is a wasteful number, since it uses less digits than its factorization.

422188240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887 (or 8881 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 422188240 is about 20547.2197632672. The cubic root of 422188240 is about 750.1855777811.

The spelling of 422188240 in words is "four hundred twenty-two million, one hundred eighty-eight thousand, two hundred forty".