402211332 has 60 divisors (see below), whose sum is σ = 1054769100. Its totient is φ = 133648704.

The previous prime is 402211331. The next prime is 402211363. The reversal of 402211332 is 233112204.

It can be written as a sum of positive squares in 2 ways, for example, as 164249856 + 237961476 = 12816^2 + 15426^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (402211331) 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 19 ways as a sum of consecutive naturals, for example, 111298 + ... + 114854.

It is an arithmetic number, because the mean of its divisors is an integer number (17579485).

Almost surely, 2^402211332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402211332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527384550).

402211332 is an abundant number, since it is smaller than the sum of its proper divisors (652557768).

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

402211332 is a wasteful number, since it uses less digits than its factorization.

402211332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922 (or 3911 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 402211332 is about 20055.2071043906. The cubic root of 402211332 is about 738.1615747756.

Adding to 402211332 its reverse (233112204), we get a palindrome (635323536).

The spelling of 402211332 in words is "four hundred two million, two hundred eleven thousand, three hundred thirty-two".