82403018 has 4 divisors (see below), whose sum is σ = 123604530. Its totient is φ = 41201508.

The previous prime is 82403017. The next prime is 82403119. The reversal of 82403018 is 81030428.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44049769 + 38353249 = 6637^2 + 6193^2 .

It is not an unprimeable number, because it can be changed into a prime (82403017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20600753 + ... + 20600756.

Almost surely, 2^82403018 is an apocalyptic number.

82403018 is a deficient number, since it is larger than the sum of its proper divisors (41201512).

82403018 is a wasteful number, since it uses less digits than its factorization.

82403018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41201511.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 82403018 is about 9077.6108090180. The cubic root of 82403018 is about 435.1587353926.

The spelling of 82403018 in words is "eighty-two million, four hundred three thousand, eighteen".