428296239996 has 288 divisors, whose sum is σ = 1110422053440. Its totient is φ = 128318361600.

The previous prime is 428296239947. The next prime is 428296240061. The reversal of 428296239996 is 699932692824.

It is a super-2 number, since 2×428296239996² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 428296239996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 841446190 + ... + 841446698.

It is an arithmetic number, because the mean of its divisors is an integer number (3855632130).

Almost surely, 2^428296239996 is an apocalyptic number.

428296239996 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428296239996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555211026720).

428296239996 is an abundant number, since it is smaller than the sum of its proper divisors (682125813444).

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

428296239996 is a wasteful number, since it uses less digits than its factorization.

428296239996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 692 counting only the distinct ones).

The product of its digits is 181398528, while the sum is 69.

The spelling of 428296239996 in words is "four hundred twenty-eight billion, two hundred ninety-six million, two hundred thirty-nine thousand, nine hundred ninety-six".