78872033 has 4 divisors (see below), whose sum is σ = 78906048. Its totient is φ = 78838020.

The previous prime is 78872023. The next prime is 78872039. The reversal of 78872033 is 33027887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33027887 = 47 ⋅702721.

It is a cyclic number.

It is not a de Polignac number, because 78872033 - 2²⁰ = 77823457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78872039) 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, 13253 + ... + 18258.

It is an arithmetic number, because the mean of its divisors is an integer number (19726512).

Almost surely, 2^78872033 is an apocalyptic number.

It is an amenable number.

78872033 is a deficient number, since it is larger than the sum of its proper divisors (34015).

78872033 is a wasteful number, since it uses less digits than its factorization.

78872033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34014.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 78872033 is about 8880.9927936014. The cubic root of 78872033 is about 428.8522356476.

The spelling of 78872033 in words is "seventy-eight million, eight hundred seventy-two thousand, thirty-three".