72764834 has 4 divisors (see below), whose sum is σ = 109147254. Its totient is φ = 36382416.

The previous prime is 72764821. The next prime is 72764837. The reversal of 72764834 is 43846727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64080025 + 8684809 = 8005^2 + 2947^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72764791 and 72764800.

It is not an unprimeable number, because it can be changed into a prime (72764837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18191207 + ... + 18191210.

Almost surely, 2^72764834 is an apocalyptic number.

72764834 is a deficient number, since it is larger than the sum of its proper divisors (36382420).

72764834 is a wasteful number, since it uses less digits than its factorization.

72764834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36382419.

The product of its digits is 225792, while the sum is 41.

The square root of 72764834 is about 8530.2305947729. The cubic root of 72764834 is about 417.4846521663.

The spelling of 72764834 in words is "seventy-two million, seven hundred sixty-four thousand, eight hundred thirty-four".