28466826420 has 48 divisors (see below), whose sum is σ = 79789364928. Its totient is φ = 7583320320.

The previous prime is 28466826347. The next prime is 28466826431. The reversal of 28466826420 is 2462866482.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28466826420.

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, 186049 + ... + 302568.

It is an arithmetic number, because the mean of its divisors is an integer number (1662278436).

Almost surely, 2^28466826420 is an apocalyptic number.

28466826420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28466826420 is an abundant number, since it is smaller than the sum of its proper divisors (51322538508).

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

28466826420 is a wasteful number, since it uses less digits than its factorization.

28466826420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489600 (or 489598 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 48.

The spelling of 28466826420 in words is "twenty-eight billion, four hundred sixty-six million, eight hundred twenty-six thousand, four hundred twenty".