283538140 has 24 divisors (see below), whose sum is σ = 626769360. Its totient is φ = 107445888.

The previous prime is 283538137. The next prime is 283538147. The reversal of 283538140 is 41835382.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 283538096 and 283538105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283538147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372697 + ... + 373456.

It is an arithmetic number, because the mean of its divisors is an integer number (26115390).

Almost surely, 2^283538140 is an apocalyptic number.

283538140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283538140 is an abundant number, since it is smaller than the sum of its proper divisors (343231220).

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

283538140 is a wasteful number, since it uses less digits than its factorization.

283538140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746181 (or 746179 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 283538140 is about 16838.5907961444. The cubic root of 283538140 is about 656.9573290731.

The spelling of 283538140 in words is "two hundred eighty-three million, five hundred thirty-eight thousand, one hundred forty".