28377483840 has 224 divisors, whose sum is σ = 100833936000. Its totient is φ = 7512569856.

The previous prime is 28377483817. The next prime is 28377483923. The reversal of 28377483840 is 4838477382.

28377483840 is a `hidden beast` number, since 2 + 83 + 7 + 7 + 483 + 84 + 0 = 666.

It is a super-2 number, since 2×28377483840² (a number of 22 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 31 ways as a sum of consecutive naturals, for example, 1189146 + ... + 1212774.

It is an arithmetic number, because the mean of its divisors is an integer number (450151500).

Almost surely, 2^28377483840 is an apocalyptic number.

28377483840 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 28377483840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50416968000).

28377483840 is an abundant number, since it is smaller than the sum of its proper divisors (72456452160).

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

28377483840 is a wasteful number, since it uses less digits than its factorization.

28377483840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23794 (or 23778 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 28377483840 in words is "twenty-eight billion, three hundred seventy-seven million, four hundred eighty-three thousand, eight hundred forty".