282128740 has 12 divisors (see below), whose sum is σ = 592470396. Its totient is φ = 112851488.

The previous prime is 282128729. The next prime is 282128747. The reversal of 282128740 is 47821282.

It can be written as a sum of positive squares in 2 ways, for example, as 176943204 + 105185536 = 13302^2 + 10256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 282128696 and 282128705.

It is not an unprimeable number, because it can be changed into a prime (282128747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7053199 + ... + 7053238.

It is an arithmetic number, because the mean of its divisors is an integer number (49372533).

Almost surely, 2^282128740 is an apocalyptic number.

282128740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

282128740 is an abundant number, since it is smaller than the sum of its proper divisors (310341656).

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

282128740 is a wasteful number, since it uses less digits than its factorization.

282128740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14106446 (or 14106444 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 282128740 is about 16796.6883640794. The cubic root of 282128740 is about 655.8669947728.

The spelling of 282128740 in words is "two hundred eighty-two million, one hundred twenty-eight thousand, seven hundred forty".