72803867 has 4 divisors (see below), whose sum is σ = 72832176. Its totient is φ = 72775560.

The previous prime is 72803851. The next prime is 72803917. The reversal of 72803867 is 76830827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76830827 = 5527 ⋅13901.

It is a cyclic number.

It is not a de Polignac number, because 72803867 - 2⁴ = 72803851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72803767) 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, 9863 + ... + 15584.

It is an arithmetic number, because the mean of its divisors is an integer number (18208044).

Almost surely, 2^72803867 is an apocalyptic number.

72803867 is a deficient number, since it is larger than the sum of its proper divisors (28309).

72803867 is a wasteful number, since it uses less digits than its factorization.

72803867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28308.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 72803867 is about 8532.5182097667. The cubic root of 72803867 is about 417.5592887940.

The spelling of 72803867 in words is "seventy-two million, eight hundred three thousand, eight hundred sixty-seven".