78045802 has 8 divisors (see below), whose sum is σ = 120232836. Its totient is φ = 37968192.

The previous prime is 78045769. The next prime is 78045809. The reversal of 78045802 is 20854087.

It can be written as a sum of positive squares in 2 ways, for example, as 72097081 + 5948721 = 8491^2 + 2439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78045802² = 12182294419646408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78045809) 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, 527263 + ... + 527410.

Almost surely, 2^78045802 is an apocalyptic number.

78045802 is a deficient number, since it is larger than the sum of its proper divisors (42187034).

78045802 is a wasteful number, since it uses less digits than its factorization.

78045802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054712.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 78045802 is about 8834.3535134157. The cubic root of 78045802 is about 427.3494827086.

Adding to 78045802 its reverse (20854087), we get a palindrome (98899889).

The spelling of 78045802 in words is "seventy-eight million, forty-five thousand, eight hundred two".