180286340 has 24 divisors (see below), whose sum is σ = 407725080. Its totient is φ = 66567168.

The previous prime is 180286331. The next prime is 180286349. The reversal of 180286340 is 43682081.

It is an interprime number because it is at equal distance from previous prime (180286331) and next prime (180286349).

It can be written as a sum of positive squares in 4 ways, for example, as 565504 + 179720836 = 752^2 + 13406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 180286297 and 180286306.

It is not an unprimeable number, because it can be changed into a prime (180286349) 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, 346445 + ... + 346964.

It is an arithmetic number, because the mean of its divisors is an integer number (16988545).

Almost surely, 2^180286340 is an apocalyptic number.

180286340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180286340 is an abundant number, since it is smaller than the sum of its proper divisors (227438740).

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

180286340 is a wasteful number, since it uses less digits than its factorization.

180286340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693431 (or 693429 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 180286340 is about 13427.0748862140. The cubic root of 180286340 is about 564.9208545519.

The spelling of 180286340 in words is "one hundred eighty million, two hundred eighty-six thousand, three hundred forty".