73243560 has 128 divisors (see below), whose sum is σ = 244944000. Its totient is φ = 17396736.

The previous prime is 73243553. The next prime is 73243571. The reversal of 73243560 is 6534237.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44431 + ... + 46049.

It is an arithmetic number, because the mean of its divisors is an integer number (1913625).

Almost surely, 2^73243560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73243560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122472000).

73243560 is an abundant number, since it is smaller than the sum of its proper divisors (171700440).

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

73243560 is a wasteful number, since it uses less digits than its factorization.

73243560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 73243560 is about 8558.2451472250. The cubic root of 73243560 is about 418.3982072513.

Adding to 73243560 its reverse (6534237), we get a palindrome (79777797).

The spelling of 73243560 in words is "seventy-three million, two hundred forty-three thousand, five hundred sixty".