78528764 has 12 divisors (see below), whose sum is σ = 139755000. Its totient is φ = 38598768.

The previous prime is 78528761. The next prime is 78528787. The reversal of 78528764 is 46782587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78528761) 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 3 ways as a sum of consecutive naturals, for example, 166139 + ... + 166610.

It is an arithmetic number, because the mean of its divisors is an integer number (11646250).

Almost surely, 2^78528764 is an apocalyptic number.

It is an amenable number.

78528764 is a deficient number, since it is larger than the sum of its proper divisors (61226236).

78528764 is a wasteful number, since it uses less digits than its factorization.

78528764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332812 (or 332810 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The square root of 78528764 is about 8861.6456710929. The cubic root of 78528764 is about 428.2291767653.

The spelling of 78528764 in words is "seventy-eight million, five hundred twenty-eight thousand, seven hundred sixty-four".