72030965 has 4 divisors (see below), whose sum is σ = 86437164. Its totient is φ = 57624768.

The previous prime is 72030961. The next prime is 72030967. The reversal of 72030965 is 56903027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56903027 = 233 ⋅244219.

It can be written as a sum of positive squares in 2 ways, for example, as 24820324 + 47210641 = 4982^2 + 6871^2 .

It is a cyclic number.

It is not a de Polignac number, because 72030965 - 2² = 72030961 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 (72030961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7203092 + ... + 7203101.

It is an arithmetic number, because the mean of its divisors is an integer number (21609291).

Almost surely, 2^72030965 is an apocalyptic number.

It is an amenable number.

72030965 is a deficient number, since it is larger than the sum of its proper divisors (14406199).

72030965 is a wasteful number, since it uses less digits than its factorization.

72030965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14406198.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 72030965 is about 8487.1058082246. The cubic root of 72030965 is about 416.0763947624.

The spelling of 72030965 in words is "seventy-two million, thirty thousand, nine hundred sixty-five".