428220888402 has 16 divisors (see below), whose sum is σ = 856475025120. Its totient is φ = 142734754752.

The previous prime is 428220888401. The next prime is 428220888461. The reversal of 428220888402 is 204888022824.

It is a super-2 number, since 2×428220888402² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428220888401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216327 + ... + 1528362.

It is an arithmetic number, because the mean of its divisors is an integer number (53529689070).

Almost surely, 2^428220888402 is an apocalyptic number.

428220888402 is an abundant number, since it is smaller than the sum of its proper divisors (428254136718).

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

428220888402 is a wasteful number, since it uses less digits than its factorization.

428220888402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770697.

The product of its (nonzero) digits is 1048576, while the sum is 48.

The spelling of 428220888402 in words is "four hundred twenty-eight billion, two hundred twenty million, eight hundred eighty-eight thousand, four hundred two".