73000038 has 16 divisors (see below), whose sum is σ = 149946480. Its totient is φ = 23675616.

The previous prime is 73000019. The next prime is 73000043. The reversal of 73000038 is 83000037.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72999978 and 73000023.

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 7 ways as a sum of consecutive naturals, for example, 164193 + ... + 164636.

It is an arithmetic number, because the mean of its divisors is an integer number (9371655).

Almost surely, 2^73000038 is an apocalyptic number.

73000038 is an abundant number, since it is smaller than the sum of its proper divisors (76946442).

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

73000038 is a wasteful number, since it uses less digits than its factorization.

73000038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328871.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 73000038 is about 8544.0059690990. The cubic root of 73000038 is about 417.9339921563.

Subtracting 73000038 from its reverse (83000037), we obtain a palindrome (9999999).

The spelling of 73000038 in words is "seventy-three million, thirty-eight", and thus it is an aban number and an uban number.