266828401428 has 48 divisors (see below), whose sum is σ = 643837791744. Its totient is φ = 85919080320.

The previous prime is 266828401289. The next prime is 266828401487. The reversal of 266828401428 is 824104828662.

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, 436675 + ... + 851082.

It is an arithmetic number, because the mean of its divisors is an integer number (13413287328).

Almost surely, 2^266828401428 is an apocalyptic number.

It is an amenable number.

266828401428 is an abundant number, since it is smaller than the sum of its proper divisors (377009390316).

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

266828401428 is a wasteful number, since it uses less digits than its factorization.

266828401428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288352 (or 1288350 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 51.

The spelling of 266828401428 in words is "two hundred sixty-six billion, eight hundred twenty-eight million, four hundred one thousand, four hundred twenty-eight".