3220401402 has 20 divisors (see below), whose sum is σ = 7216084986. Its totient is φ = 1073467080.

The previous prime is 3220401397. The next prime is 3220401421. The reversal of 3220401402 is 2041040223.

3220401402 is a `hidden beast` number, since 3 + 220 + 40 + 1 + 402 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3052673001 + 167728401 = 55251^2 + 12951^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9939349 + ... + 9939672.

Almost surely, 2^3220401402 is an apocalyptic number.

3220401402 is an abundant number, since it is smaller than the sum of its proper divisors (3995683584).

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

3220401402 is a wasteful number, since it uses less digits than its factorization.

3220401402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19879035 (or 19879026 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 3220401402 is about 56748.5806166110. The cubic root of 3220401402 is about 1476.7376097147.

Adding to 3220401402 its reverse (2041040223), we get a palindrome (5261441625).

The spelling of 3220401402 in words is "three billion, two hundred twenty million, four hundred one thousand, four hundred two".