73071906 has 16 divisors (see below), whose sum is σ = 146288064. Its totient is φ = 24333264.

The previous prime is 73071871. The next prime is 73071953. The reversal of 73071906 is 60917037.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1251 + ... + 12153.

It is an arithmetic number, because the mean of its divisors is an integer number (9143004).

Almost surely, 2^73071906 is an apocalyptic number.

73071906 is an abundant number, since it is smaller than the sum of its proper divisors (73216158).

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

73071906 is a wasteful number, since it uses less digits than its factorization.

73071906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12025.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 73071906 is about 8548.2106899631. The cubic root of 73071906 is about 418.0710981524.

The spelling of 73071906 in words is "seventy-three million, seventy-one thousand, nine hundred six".