285013740 has 96 divisors (see below), whose sum is σ = 900668160. Its totient is φ = 66707200.

The previous prime is 285013739. The next prime is 285013747. The reversal of 285013740 is 47310582.

285013740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 = 285013698 and 285013707.

It is not an unprimeable number, because it can be changed into a prime (285013747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11695 + ... + 26585.

It is an arithmetic number, because the mean of its divisors is an integer number (9381960).

Almost surely, 2^285013740 is an apocalyptic number.

285013740 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 285013740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450334080).

285013740 is an abundant number, since it is smaller than the sum of its proper divisors (615654420).

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

285013740 is a wasteful number, since it uses less digits than its factorization.

285013740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14943 (or 14941 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 285013740 is about 16882.3499549085. The cubic root of 285013740 is about 658.0950118865.

The spelling of 285013740 in words is "two hundred eighty-five million, thirteen thousand, seven hundred forty".