72739071 has 12 divisors (see below), whose sum is σ = 105145872. Its totient is φ = 48456576.

The previous prime is 72739067. The next prime is 72739081. The reversal of 72739071 is 17093727.

It is not a de Polignac number, because 72739071 - 2² = 72739067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72739081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16150 + ... + 20156.

It is an arithmetic number, because the mean of its divisors is an integer number (8762156).

Almost surely, 2^72739071 is an apocalyptic number.

72739071 is a deficient number, since it is larger than the sum of its proper divisors (32406801).

72739071 is a wasteful number, since it uses less digits than its factorization.

72739071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6030 (or 6027 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 72739071 is about 8528.7203612265. The cubic root of 72739071 is about 417.4353750355.

The spelling of 72739071 in words is "seventy-two million, seven hundred thirty-nine thousand, seventy-one".