73531206 has 32 divisors (see below), whose sum is σ = 186746880. Its totient is φ = 21008808.

The previous prime is 73531201. The next prime is 73531229. The reversal of 73531206 is 60213537.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 73531206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73531201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96886 + ... + 97641.

It is an arithmetic number, because the mean of its divisors is an integer number (5835840).

Almost surely, 2^73531206 is an apocalyptic number.

73531206 is an abundant number, since it is smaller than the sum of its proper divisors (113215674).

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

73531206 is a wasteful number, since it uses less digits than its factorization.

73531206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194545 (or 194539 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 73531206 is about 8575.0338774841. The cubic root of 73531206 is about 418.9452103576.

It can be divided in two parts, 73531 and 206, that added together give a palindrome (73737).

The spelling of 73531206 in words is "seventy-three million, five hundred thirty-one thousand, two hundred six".