220402602 has 72 divisors (see below), whose sum is σ = 555149088. Its totient is φ = 61906320.

The previous prime is 220402579. The next prime is 220402613. The reversal of 220402602 is 206204022.

It is a happy number.

220402602 is a `hidden beast` number, since 2 + 20 + 40 + 2 + 602 = 666.

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 (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 634993 + ... + 635339.

It is an arithmetic number, because the mean of its divisors is an integer number (7710404).

Almost surely, 2^220402602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220402602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277574544).

220402602 is an abundant number, since it is smaller than the sum of its proper divisors (334746486).

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

220402602 is a wasteful number, since it uses less digits than its factorization.

220402602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504 (or 430 counting only the distinct ones).

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

The square root of 220402602 is about 14845.9624814291. The cubic root of 220402602 is about 604.0490965602.

Adding to 220402602 its reverse (206204022), we get a palindrome (426606624).

It can be divided in two parts, 22040 and 2602, that added together give a palindrome (24642).

The spelling of 220402602 in words is "two hundred twenty million, four hundred two thousand, six hundred two".