428323816956 has 48 divisors (see below), whose sum is σ = 1163747741184. Its totient is φ = 120069208896.

The previous prime is 428323816913. The next prime is 428323816969. The reversal of 428323816956 is 659618323824.

It is a super-2 number, since 2×428323816956² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 428323816896 and 428323816905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48100200 + ... + 48109103.

It is an arithmetic number, because the mean of its divisors is an integer number (24244744608).

Almost surely, 2^428323816956 is an apocalyptic number.

It is an amenable number.

428323816956 is an abundant number, since it is smaller than the sum of its proper divisors (735423924228).

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

428323816956 is a wasteful number, since it uses less digits than its factorization.

428323816956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96209370 (or 96209368 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 57.

The spelling of 428323816956 in words is "four hundred twenty-eight billion, three hundred twenty-three million, eight hundred sixteen thousand, nine hundred fifty-six".