72995109 has 32 divisors (see below), whose sum is σ = 108875904. Its totient is φ = 43130880.

The previous prime is 72995071. The next prime is 72995113. The reversal of 72995109 is 90159927.

It is not a de Polignac number, because 72995109 - 2¹³ = 72986917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72995159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378117 + ... + 378309.

It is an arithmetic number, because the mean of its divisors is an integer number (3402372).

Almost surely, 2^72995109 is an apocalyptic number.

It is an amenable number.

72995109 is a deficient number, since it is larger than the sum of its proper divisors (35880795).

72995109 is a wasteful number, since it uses less digits than its factorization.

72995109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 72995109 is about 8543.7175163976. The cubic root of 72995109 is about 417.9245855721.

The spelling of 72995109 in words is "seventy-two million, nine hundred ninety-five thousand, one hundred nine".