283849440 has 192 divisors, whose sum is σ = 1066576896. Its totient is φ = 62042112.

The previous prime is 283849387. The next prime is 283849457. The reversal of 283849440 is 44948382.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 283849392 and 283849401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75444 + ... + 79116.

It is an arithmetic number, because the mean of its divisors is an integer number (5555088).

Almost surely, 2^283849440 is an apocalyptic number.

283849440 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 283849440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533288448).

283849440 is an abundant number, since it is smaller than the sum of its proper divisors (782727456).

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

283849440 is a wasteful number, since it uses less digits than its factorization.

283849440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3713 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 283849440 is about 16847.8319079934. The cubic root of 283849440 is about 657.1976683060.

The spelling of 283849440 in words is "two hundred eighty-three million, eight hundred forty-nine thousand, four hundred forty".