72302303 has 4 divisors (see below), whose sum is σ = 72499680. Its totient is φ = 72104928.

The previous prime is 72302299. The next prime is 72302333. The reversal of 72302303 is 30320327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30320327 = 3581 ⋅8467.

It is a cyclic number.

It is not a de Polignac number, because 72302303 - 2² = 72302299 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 (72302333) 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, 98138 + ... + 98871.

It is an arithmetic number, because the mean of its divisors is an integer number (18124920).

Almost surely, 2^72302303 is an apocalyptic number.

72302303 is a deficient number, since it is larger than the sum of its proper divisors (197377).

72302303 is a wasteful number, since it uses less digits than its factorization.

72302303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197376.

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 72302303 is about 8503.0760904510. The cubic root of 72302303 is about 416.5981882841.

The spelling of 72302303 in words is "seventy-two million, three hundred two thousand, three hundred three".