283401840 has 160 divisors (see below), whose sum is σ = 913441536. Its totient is φ = 72632320.

The previous prime is 283401829. The next prime is 283401851. The reversal of 283401840 is 48104382.

It is an interprime number because it is at equal distance from previous prime (283401829) and next prime (283401851).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 283401798 and 283401807.

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, 816547 + ... + 816893.

Almost surely, 2^283401840 is an apocalyptic number.

283401840 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 283401840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456720768).

283401840 is an abundant number, since it is smaller than the sum of its proper divisors (630039696).

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

283401840 is a wasteful number, since it uses less digits than its factorization.

283401840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 283401840 is about 16834.5430588418. The cubic root of 283401840 is about 656.8520432540.

The spelling of 283401840 in words is "two hundred eighty-three million, four hundred one thousand, eight hundred forty".