78826153 has 6 divisors (see below), whose sum is σ = 91695786. Its totient is φ = 67565232.

The previous prime is 78826133. The next prime is 78826159. The reversal of 78826153 is 35162887.

It can be written as a sum of positive squares in only one way, i.e., 46199209 + 32626944 = 6797^2 + 5712^2 .

It is not a de Polignac number, because 78826153 - 2⁹ = 78825641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78826159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 804300 + ... + 804397.

It is an arithmetic number, because the mean of its divisors is an integer number (15282631).

Almost surely, 2^78826153 is an apocalyptic number.

It is an amenable number.

78826153 is a deficient number, since it is larger than the sum of its proper divisors (12869633).

78826153 is a wasteful number, since it uses less digits than its factorization.

78826153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608711 (or 1608704 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 78826153 is about 8878.4093733056. The cubic root of 78826153 is about 428.7690648193.

The spelling of 78826153 in words is "seventy-eight million, eight hundred twenty-six thousand, one hundred fifty-three".