72076509 has 12 divisors (see below), whose sum is σ = 104229216. Its totient is φ = 47996232.

The previous prime is 72076507. The next prime is 72076531. The reversal of 72076509 is 90567027.

It is not a de Polignac number, because 72076509 - 2¹ = 72076507 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72076507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4774 + ... + 12920.

It is an arithmetic number, because the mean of its divisors is an integer number (8685768).

Almost surely, 2^72076509 is an apocalyptic number.

It is an amenable number.

72076509 is a deficient number, since it is larger than the sum of its proper divisors (32152707).

72076509 is a wasteful number, since it uses less digits than its factorization.

72076509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9136 (or 9133 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 72076509 is about 8489.7885132670. The cubic root of 72076509 is about 416.1640690511.

The spelling of 72076509 in words is "seventy-two million, seventy-six thousand, five hundred nine".