73913040 has 160 divisors (see below), whose sum is σ = 268137600. Its totient is φ = 18662400.

The previous prime is 73913027. The next prime is 73913041. The reversal of 73913040 is 4031937.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 73912995 and 73913013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73913041) by changing a digit.

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, 40140 + ... + 41940.

It is an arithmetic number, because the mean of its divisors is an integer number (1675860).

Almost surely, 2^73913040 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 73913040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134068800).

73913040 is an abundant number, since it is smaller than the sum of its proper divisors (194224560).

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

73913040 is a wasteful number, since it uses less digits than its factorization.

73913040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842 (or 1830 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 73913040 is about 8597.2693339223. The cubic root of 73913040 is about 419.6691271644.

Adding to 73913040 its reverse (4031937), we get a palindrome (77944977).

The spelling of 73913040 in words is "seventy-three million, nine hundred thirteen thousand, forty".