72307798 has 4 divisors (see below), whose sum is σ = 108461700. Its totient is φ = 36153898.

The previous prime is 72307771. The next prime is 72307799. The reversal of 72307798 is 89770327.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72307799) by changing a digit.

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 as a sum of consecutive naturals, namely, 18076948 + ... + 18076951.

It is an arithmetic number, because the mean of its divisors is an integer number (27115425).

Almost surely, 2^72307798 is an apocalyptic number.

72307798 is a deficient number, since it is larger than the sum of its proper divisors (36153902).

72307798 is a wasteful number, since it uses less digits than its factorization.

72307798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36153901.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 72307798 is about 8503.3992026718. The cubic root of 72307798 is about 416.6087418855.

The spelling of 72307798 in words is "seventy-two million, three hundred seven thousand, seven hundred ninety-eight".