28234059840 has 560 divisors, whose sum is σ = 116708553984. Its totient is φ = 6345216000.

The previous prime is 28234059823. The next prime is 28234059851. The reversal of 28234059840 is 4895043282.

28234059840 is a `hidden beast` number, since 28 + 2 + 34 + 0 + 598 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (560).

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 79 ways as a sum of consecutive naturals, for example, 11066565 + ... + 11069115.

Almost surely, 2^28234059840 is an apocalyptic number.

28234059840 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 28234059840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58354276992).

28234059840 is an abundant number, since it is smaller than the sum of its proper divisors (88474494144).

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

28234059840 is a wasteful number, since it uses less digits than its factorization.

28234059840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648 (or 2629 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 28234059840 in words is "twenty-eight billion, two hundred thirty-four million, fifty-nine thousand, eight hundred forty".