73139075 has 24 divisors (see below), whose sum is σ = 98565120. Its totient is φ = 53632800.

The previous prime is 73139071. The next prime is 73139081. The reversal of 73139075 is 57093137.

It is not a de Polignac number, because 73139075 - 2² = 73139071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73139071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12242 + ... + 17208.

It is an arithmetic number, because the mean of its divisors is an integer number (4106880).

Almost surely, 2^73139075 is an apocalyptic number.

73139075 is a deficient number, since it is larger than the sum of its proper divisors (25426045).

73139075 is a wasteful number, since it uses less digits than its factorization.

73139075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027 (or 5022 counting only the distinct ones).

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 73139075 is about 8552.1386214210. The cubic root of 73139075 is about 418.1991583934.

The spelling of 73139075 in words is "seventy-three million, one hundred thirty-nine thousand, seventy-five".