72204346 has 4 divisors (see below), whose sum is σ = 108306522. Its totient is φ = 36102172.

The previous prime is 72204281. The next prime is 72204347. The reversal of 72204346 is 64340227.

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., 54184321 + 18020025 = 7361^2 + 4245^2 .

It is not an unprimeable number, because it can be changed into a prime (72204347) 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 as a sum of consecutive naturals, namely, 18051085 + ... + 18051088.

Almost surely, 2^72204346 is an apocalyptic number.

72204346 is a deficient number, since it is larger than the sum of its proper divisors (36102176).

72204346 is a wasteful number, since it uses less digits than its factorization.

72204346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36102175.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 72204346 is about 8497.3140462148. The cubic root of 72204346 is about 416.4099639792.

The spelling of 72204346 in words is "seventy-two million, two hundred four thousand, three hundred forty-six".