28062951840 has 576 divisors, whose sum is σ = 122326993152. Its totient is φ = 5688115200.

The previous prime is 28062951827. The next prime is 28062951869. The reversal of 28062951840 is 4815926082.

28062951840 is a `hidden beast` number, since 2 + 8 + 0 + 629 + 5 + 18 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4542994 + ... + 4549166.

It is an arithmetic number, because the mean of its divisors is an integer number (212373252).

Almost surely, 2^28062951840 is an apocalyptic number.

28062951840 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 28062951840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61163496576).

28062951840 is an abundant number, since it is smaller than the sum of its proper divisors (94264041312).

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

28062951840 is a wasteful number, since it uses less digits than its factorization.

28062951840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6253 (or 6242 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 28062951840 in words is "twenty-eight billion, sixty-two million, nine hundred fifty-one thousand, eight hundred forty".