78827733 has 6 divisors (see below), whose sum is σ = 113862294. Its totient is φ = 52551816.

The previous prime is 78827731. The next prime is 78827737. The reversal of 78827733 is 33772887.

It can be written as a sum of positive squares in only one way, i.e., 73153809 + 5673924 = 8553^2 + 2382^2 .

It is not a de Polignac number, because 78827733 - 2¹ = 78827731 is a prime.

It is a super-2 number, since 2×78827733² = 12427622979838578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78827731) 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, 4379310 + ... + 4379327.

It is an arithmetic number, because the mean of its divisors is an integer number (18977049).

Almost surely, 2^78827733 is an apocalyptic number.

It is an amenable number.

78827733 is a deficient number, since it is larger than the sum of its proper divisors (35034561).

78827733 is a wasteful number, since it uses less digits than its factorization.

78827733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8758643 (or 8758640 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 78827733 is about 8878.4983527621. The cubic root of 78827733 is about 428.7719295648.

The spelling of 78827733 in words is "seventy-eight million, eight hundred twenty-seven thousand, seven hundred thirty-three".