72200234 has 4 divisors (see below), whose sum is σ = 108300354. Its totient is φ = 36100116.

The previous prime is 72200213. The next prime is 72200263. The reversal of 72200234 is 43200227.

It is a happy number.

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., 72199009 + 1225 = 8497^2 + 35^2 .

It is a Curzon number.

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 as a sum of consecutive naturals, namely, 18050057 + ... + 18050060.

Almost surely, 2^72200234 is an apocalyptic number.

72200234 is a deficient number, since it is larger than the sum of its proper divisors (36100120).

72200234 is a wasteful number, since it uses less digits than its factorization.

72200234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36100119.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 72200234 is about 8497.0720839593. The cubic root of 72200234 is about 416.4020590521.

The spelling of 72200234 in words is "seventy-two million, two hundred thousand, two hundred thirty-four".