73432866 has 48 divisors (see below), whose sum is σ = 160483680. Its totient is φ = 22389120.

The previous prime is 73432841. The next prime is 73432873. The reversal of 73432866 is 66823437.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140686 + ... + 141206.

It is an arithmetic number, because the mean of its divisors is an integer number (3343410).

Almost surely, 2^73432866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73432866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80241840).

73432866 is an abundant number, since it is smaller than the sum of its proper divisors (87050814).

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

73432866 is a wasteful number, since it uses less digits than its factorization.

73432866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 678 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 73432866 is about 8569.2978708877. The cubic root of 73432866 is about 418.7583624676.

The spelling of 73432866 in words is "seventy-three million, four hundred thirty-two thousand, eight hundred sixty-six".