283397840208 has 420 divisors, whose sum is σ = 960837172500. Its totient is φ = 80702189568.

The previous prime is 283397840197. The next prime is 283397840261. The reversal of 283397840208 is 802048793382.

283397840208 is a `hidden beast` number, since 2 + 8 + 3 + 397 + 8 + 40 + 208 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 153356825664 + 130041014544 = 391608^2 + 360612^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 226899168 + ... + 226900416.

Almost surely, 2^283397840208 is an apocalyptic number.

283397840208 is a gapful number since it is divisible by the number (28) 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 283397840208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480418586250).

283397840208 is an abundant number, since it is smaller than the sum of its proper divisors (677439332292).

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

283397840208 is a wasteful number, since it uses less digits than its factorization.

283397840208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 283397840208 in words is "two hundred eighty-three billion, three hundred ninety-seven million, eight hundred forty thousand, two hundred eight".