28914920634348 has 144 divisors (see below), whose sum is σ = 84005991014400. Its totient is φ = 8214564758400.

The previous prime is 28914920634317. The next prime is 28914920634421. The reversal of 28914920634348 is 84343602941982.

28914920634348 is a `hidden beast` number, since 2 + 8 + 9 + 1 + 49 + 206 + 343 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111103078 + ... + 111363026.

It is an arithmetic number, because the mean of its divisors is an integer number (583374937600).

Almost surely, 2^{28914920634348} is an apocalyptic number.

28914920634348 is a gapful number since it is divisible by the number (28) 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 28914920634348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42002995507200).

28914920634348 is an abundant number, since it is smaller than the sum of its proper divisors (55091070380052).

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

28914920634348 is a wasteful number, since it uses less digits than its factorization.

28914920634348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262468 (or 262463 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 63.

The spelling of 28914920634348 in words is "twenty-eight trillion, nine hundred fourteen billion, nine hundred twenty million, six hundred thirty-four thousand, three hundred forty-eight".