73489530 has 64 divisors (see below), whose sum is σ = 191692800. Its totient is φ = 17962560.

The previous prime is 73489523. The next prime is 73489541. The reversal of 73489530 is 3598437.

It is a super-2 number, since 2×73489530² = 10801422039241800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15591 + ... + 19749.

It is an arithmetic number, because the mean of its divisors is an integer number (2995200).

Almost surely, 2^73489530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73489530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95846400).

73489530 is an abundant number, since it is smaller than the sum of its proper divisors (118203270).

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

73489530 is a wasteful number, since it uses less digits than its factorization.

73489530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 73489530 is about 8572.6034551938. The cubic root of 73489530 is about 418.8660455094.

The spelling of 73489530 in words is "seventy-three million, four hundred eighty-nine thousand, five hundred thirty".