73904040 has 96 divisors (see below), whose sum is σ = 274510080. Its totient is φ = 16891776.

The previous prime is 73904029. The next prime is 73904107. The reversal of 73904040 is 4040937.

It is a junction number, because it is equal to n+sod(n) for n = 73903995 and 73904013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12144 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (2859480).

Almost surely, 2^73904040 is an apocalyptic number.

73904040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

73904040 is an abundant number, since it is smaller than the sum of its proper divisors (200606040).

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

73904040 is a wasteful number, since it uses less digits than its factorization.

73904040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29351 (or 29344 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 73904040 is about 8596.7458959772. The cubic root of 73904040 is about 419.6520928429.

Adding to 73904040 its reverse (4040937), we get a palindrome (77944977).

The spelling of 73904040 in words is "seventy-three million, nine hundred four thousand, forty".