402213210 has 64 divisors (see below), whose sum is σ = 1118368512. Its totient is φ = 90671616.

The previous prime is 402213197. The next prime is 402213211. The reversal of 402213210 is 12312204.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 402213210.

It is not an unprimeable number, because it can be changed into a prime (402213211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2212 + ... + 28448.

It is an arithmetic number, because the mean of its divisors is an integer number (17474508).

Almost surely, 2^402213210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402213210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559184256).

402213210 is an abundant number, since it is smaller than the sum of its proper divisors (716155302).

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

402213210 is a wasteful number, since it uses less digits than its factorization.

402213210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26327.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 402213210 is about 20055.2539250940. The cubic root of 402213210 is about 738.1627236453.

Adding to 402213210 its reverse (12312204), we get a palindrome (414525414).

The spelling of 402213210 in words is "four hundred two million, two hundred thirteen thousand, two hundred ten".