732240018 has 12 divisors (see below), whose sum is σ = 1586520078. Its totient is φ = 244080000.

The previous prime is 732240017. The next prime is 732240023. The reversal of 732240018 is 810042237.

It can be written as a sum of positive squares in only one way, i.e., 588887289 + 143352729 = 24267^2 + 11973^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 732239973 and 732240000.

It is not an unprimeable number, because it can be changed into a prime (732240017) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 20339983 + ... + 20340018.

Almost surely, 2^732240018 is an apocalyptic number.

732240018 is an abundant number, since it is smaller than the sum of its proper divisors (854280060).

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

732240018 is a wasteful number, since it uses less digits than its factorization.

732240018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40680009 (or 40680006 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 732240018 is about 27059.9338136663. The cubic root of 732240018 is about 901.3313702731.

The spelling of 732240018 in words is "seven hundred thirty-two million, two hundred forty thousand, eighteen".