428220888403 has 8 divisors (see below), whose sum is σ = 533885783040. Its totient is φ = 333678614280.

The previous prime is 428220888401. The next prime is 428220888461. The reversal of 428220888403 is 304888022824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428220888403 - 2¹ = 428220888401 is a prime.

It is a Duffinian number.

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, 2780655043 + ... + 2780655196.

It is an arithmetic number, because the mean of its divisors is an integer number (66735722880).

Almost surely, 2^428220888403 is an apocalyptic number.

428220888403 is a deficient number, since it is larger than the sum of its proper divisors (105664894637).

428220888403 is a wasteful number, since it uses less digits than its factorization.

428220888403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561310257.

The product of its (nonzero) digits is 1572864, while the sum is 49.

The spelling of 428220888403 in words is "four hundred twenty-eight billion, two hundred twenty million, eight hundred eighty-eight thousand, four hundred three".