72911834 has 8 divisors (see below), whose sum is σ = 109481088. Its totient is φ = 36418140.

The previous prime is 72911821. The next prime is 72911921. The reversal of 72911834 is 43811927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72911834² = 10632271074487112, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72911794 and 72911803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16412 + ... + 20375.

It is an arithmetic number, because the mean of its divisors is an integer number (13685136).

Almost surely, 2^72911834 is an apocalyptic number.

72911834 is a deficient number, since it is larger than the sum of its proper divisors (36569254).

72911834 is a wasteful number, since it uses less digits than its factorization.

72911834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37780.

The product of its digits is 12096, while the sum is 35.

The square root of 72911834 is about 8538.8426616258. The cubic root of 72911834 is about 417.7655981487.

The spelling of 72911834 in words is "seventy-two million, nine hundred eleven thousand, eight hundred thirty-four".