73312002 has 24 divisors (see below), whose sum is σ = 161021484. Its totient is φ = 24102144.

The previous prime is 73311989. The next prime is 73312009. The reversal of 73312002 is 20021337.

It can be written as a sum of positive squares in 2 ways, for example, as 69705801 + 3606201 = 8349^2 + 1899^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (73312009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26583 + ... + 29210.

Almost surely, 2^73312002 is an apocalyptic number.

73312002 is an abundant number, since it is smaller than the sum of its proper divisors (87709482).

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

73312002 is a wasteful number, since it uses less digits than its factorization.

73312002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55874 (or 55871 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 73312002 is about 8562.2428136558. The cubic root of 73312002 is about 418.5284899007.

Adding to 73312002 its reverse (20021337), we get a palindrome (93333339).

The spelling of 73312002 in words is "seventy-three million, three hundred twelve thousand, two".