72436434 has 16 divisors (see below), whose sum is σ = 165569088. Its totient is φ = 20696112.

The previous prime is 72436423. The next prime is 72436451. The reversal of 72436434 is 43463427.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72436395 and 72436404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862297 + ... + 862380.

It is an arithmetic number, because the mean of its divisors is an integer number (10348068).

Almost surely, 2^72436434 is an apocalyptic number.

72436434 is an abundant number, since it is smaller than the sum of its proper divisors (93132654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72436434 is a wasteful number, since it uses less digits than its factorization.

72436434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724689.

The product of its digits is 48384, while the sum is 33.

The square root of 72436434 is about 8510.9596403696. The cubic root of 72436434 is about 416.8556453338.

The spelling of 72436434 in words is "seventy-two million, four hundred thirty-six thousand, four hundred thirty-four".