71273039 has 16 divisors (see below), whose sum is σ = 75604320. Its totient is φ = 67092480.

The previous prime is 71273023. The next prime is 71273051. The reversal of 71273039 is 93037217.

It is a cyclic number.

It is not a de Polignac number, because 71273039 - 2⁴ = 71273023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71272996 and 71273014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71213039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277199 + ... + 277455.

It is an arithmetic number, because the mean of its divisors is an integer number (4725270).

Almost surely, 2^71273039 is an apocalyptic number.

71273039 is a deficient number, since it is larger than the sum of its proper divisors (4331281).

71273039 is a wasteful number, since it uses less digits than its factorization.

71273039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 71273039 is about 8442.3361103429. The cubic root of 71273039 is about 414.6118963197.

The spelling of 71273039 in words is "seventy-one million, two hundred seventy-three thousand, thirty-nine".