28183009155840 has 4860 divisors, whose sum is σ = 137157311225088. Its totient is φ = 5504303185920.

The previous prime is 28183009155803. The next prime is 28183009155863. The reversal of 28183009155840 is 4855190038182.

28183009155840 is a `hidden beast` number, since 2 + 8 + 1 + 83 + 0 + 0 + 9 + 1 + 558 + 4 + 0 = 666.

It is a super-2 number, since 2×28183009155840² (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 539 ways as a sum of consecutive naturals, for example, 221913457857 + ... + 221913457983.

Almost surely, 2^{28183009155840} is an apocalyptic number.

28183009155840 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 28183009155840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68578655612544).

28183009155840 is an abundant number, since it is smaller than the sum of its proper divisors (108974302069248).

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

28183009155840 is a wasteful number, since it uses less digits than its factorization.

28183009155840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 28183009155840 in words is "twenty-eight trillion, one hundred eighty-three billion, nine million, one hundred fifty-five thousand, eight hundred forty".