73934520 has 128 divisors (see below), whose sum is σ = 245376000. Its totient is φ = 17671680.

The previous prime is 73934519. The next prime is 73934527. The reversal of 73934520 is 2543937.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73934527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103926 + ... + 104634.

It is an arithmetic number, because the mean of its divisors is an integer number (1917000).

Almost surely, 2^73934520 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 73934520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122688000).

73934520 is an abundant number, since it is smaller than the sum of its proper divisors (171441480).

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

73934520 is a wasteful number, since it uses less digits than its factorization.

73934520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 73934520 is about 8598.5184770401. The cubic root of 73934520 is about 419.7097768240.

The spelling of 73934520 in words is "seventy-three million, nine hundred thirty-four thousand, five hundred twenty".