402227392 has 28 divisors (see below), whose sum is σ = 912195280. Its totient is φ = 172382976.

The previous prime is 402227389. The next prime is 402227393. The reversal of 402227392 is 293722204.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (402227393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448467 + ... + 449362.

Almost surely, 2^402227392 is an apocalyptic number.

It is an amenable number.

402227392 is an abundant number, since it is smaller than the sum of its proper divisors (509967888).

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

402227392 is an equidigital number, since it uses as much as digits as its factorization.

402227392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897848 (or 897838 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 402227392 is about 20055.6074951620. The cubic root of 402227392 is about 738.1713993928.

Adding to 402227392 its reverse (293722204), we get a palindrome (695949596).

The spelling of 402227392 in words is "four hundred two million, two hundred twenty-seven thousand, three hundred ninety-two".