78047973 has 12 divisors (see below), whose sum is σ = 114647520. Its totient is φ = 51149736.

The previous prime is 78047939. The next prime is 78047989. The reversal of 78047973 is 37974087.

It is not a de Polignac number, because 78047973 - 2⁶ = 78047909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78047923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72961 + ... + 74022.

It is an arithmetic number, because the mean of its divisors is an integer number (9553960).

Almost surely, 2^78047973 is an apocalyptic number.

It is an amenable number.

78047973 is a deficient number, since it is larger than the sum of its proper divisors (36599547).

78047973 is a wasteful number, since it uses less digits than its factorization.

78047973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147048 (or 147045 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 78047973 is about 8834.4763851628. The cubic root of 78047973 is about 427.3534451986.

The spelling of 78047973 in words is "seventy-eight million, forty-seven thousand, nine hundred seventy-three".