73530156 has 48 divisors (see below), whose sum is σ = 198858240. Its totient is φ = 20711040.

The previous prime is 73530131. The next prime is 73530161. The reversal of 73530156 is 65103537.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (4142880).

Almost surely, 2^73530156 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 73530156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99429120).

73530156 is an abundant number, since it is smaller than the sum of its proper divisors (125328084).

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

73530156 is a wasteful number, since it uses less digits than its factorization.

73530156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12414 (or 12412 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 73530156 is about 8574.9726530176. The cubic root of 73530156 is about 418.9432162176.

The spelling of 73530156 in words is "seventy-three million, five hundred thirty thousand, one hundred fifty-six".