72030434 has 16 divisors (see below), whose sum is σ = 128850048. Its totient is φ = 29527872.

The previous prime is 72030421. The next prime is 72030437. The reversal of 72030434 is 43403027.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (72030437) by changing a digit.

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, 111527 + ... + 112170.

It is an arithmetic number, because the mean of its divisors is an integer number (8053128).

Almost surely, 2^72030434 is an apocalyptic number.

72030434 is a deficient number, since it is larger than the sum of its proper divisors (56819614).

72030434 is a wasteful number, since it uses less digits than its factorization.

72030434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223729.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 72030434 is about 8487.0745254180. The cubic root of 72030434 is about 416.0753723452.

The spelling of 72030434 in words is "seventy-two million, thirty thousand, four hundred thirty-four".