73103640 has 64 divisors (see below), whose sum is σ = 230860800. Its totient is φ = 18467712.

The previous prime is 73103629. The next prime is 73103651. The reversal of 73103640 is 4630137.

It is an interprime number because it is at equal distance from previous prime (73103629) and next prime (73103651).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 73103640.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 13752 + ... + 18311.

It is an arithmetic number, because the mean of its divisors is an integer number (3607200).

Almost surely, 2^73103640 is an apocalyptic number.

It is an amenable number.

73103640 is an abundant number, since it is smaller than the sum of its proper divisors (157757160).

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

73103640 is a wasteful number, since it uses less digits than its factorization.

73103640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32096 (or 32092 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 73103640 is about 8550.0666664068. The cubic root of 73103640 is about 418.1316100000.

Adding to 73103640 its reverse (4630137), we get a palindrome (77733777).

The spelling of 73103640 in words is "seventy-three million, one hundred three thousand, six hundred forty".