28678164480 has 832 divisors, whose sum is σ = 120781209600. Its totient is φ = 6317015040.

The previous prime is 28678164419. The next prime is 28678164481. The reversal of 28678164480 is 8446187682.

28678164480 is a `hidden beast` number, since 2 + 86 + 7 + 81 + 6 + 4 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28678164481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 119992201 + ... + 119992439.

Almost surely, 2^28678164480 is an apocalyptic number.

28678164480 is a gapful number since it is divisible by the number (20) 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 28678164480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60390604800).

28678164480 is an abundant number, since it is smaller than the sum of its proper divisors (92103045120).

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

28678164480 is a wasteful number, since it uses less digits than its factorization.

28678164480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 28678164480 in words is "twenty-eight billion, six hundred seventy-eight million, one hundred sixty-four thousand, four hundred eighty".