72300071 has 4 divisors (see below), whose sum is σ = 73981512. Its totient is φ = 70618632.

The previous prime is 72300049. The next prime is 72300077. The reversal of 72300071 is 17000327.

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

It is a cyclic number.

It is not a de Polignac number, because 72300071 - 2²² = 68105767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72300077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840656 + ... + 840741.

It is an arithmetic number, because the mean of its divisors is an integer number (18495378).

Almost surely, 2^72300071 is an apocalyptic number.

72300071 is a deficient number, since it is larger than the sum of its proper divisors (1681441).

72300071 is a wasteful number, since it uses less digits than its factorization.

72300071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681440.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 72300071 is about 8502.9448428177. The cubic root of 72300071 is about 416.5939013910.

Adding to 72300071 its reverse (17000327), we get a palindrome (89300398).

The spelling of 72300071 in words is "seventy-two million, three hundred thousand, seventy-one".