72305135 has 12 divisors (see below), whose sum is σ = 100932408. Its totient is φ = 49580496.

The previous prime is 72305111. The next prime is 72305137. The reversal of 72305135 is 53150327.

It is not a de Polignac number, because 72305135 - 2⁶ = 72305071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72305137) 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, 147317 + ... + 147806.

It is an arithmetic number, because the mean of its divisors is an integer number (8411034).

Almost surely, 2^72305135 is an apocalyptic number.

72305135 is a deficient number, since it is larger than the sum of its proper divisors (28627273).

72305135 is a wasteful number, since it uses less digits than its factorization.

72305135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295142 (or 295135 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 72305135 is about 8503.2426167904. The cubic root of 72305135 is about 416.6036274408.

The spelling of 72305135 in words is "seventy-two million, three hundred five thousand, one hundred thirty-five".