428844894556 has 288 divisors, whose sum is σ = 947670700032. Its totient is φ = 167979018240.

The previous prime is 428844894547. The next prime is 428844894559. The reversal of 428844894556 is 655498448824.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a junction number, because it is equal to n+sod(n) for n = 428844894491 and 428844894500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428844894559) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 662820225 + ... + 662820871.

It is an arithmetic number, because the mean of its divisors is an integer number (3290523264).

Almost surely, 2^428844894556 is an apocalyptic number.

It is an amenable number.

428844894556 is an abundant number, since it is smaller than the sum of its proper divisors (518825805476).

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

428844894556 is a wasteful number, since it uses less digits than its factorization.

428844894556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 796 counting only the distinct ones).

The product of its digits is 353894400, while the sum is 67.

The spelling of 428844894556 in words is "four hundred twenty-eight billion, eight hundred forty-four million, eight hundred ninety-four thousand, five hundred fifty-six".