78300136 has 16 divisors (see below), whose sum is σ = 146911140. Its totient is φ = 39123840.

The previous prime is 78300127. The next prime is 78300143. The reversal of 78300136 is 63100387.

It can be written as a sum of positive squares in 2 ways, for example, as 72080100 + 6220036 = 8490^2 + 2494^2 .

It is a super-2 number, since 2×78300136² = 12261822595236992, which contains 22 as substring.

It is an unprimeable number.

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, 16246 + ... + 20506.

Almost surely, 2^78300136 is an apocalyptic number.

It is an amenable number.

78300136 is a deficient number, since it is larger than the sum of its proper divisors (68611004).

78300136 is a wasteful number, since it uses less digits than its factorization.

78300136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6564 (or 6560 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 78300136 is about 8848.7364069679. The cubic root of 78300136 is about 427.8131918333.

The spelling of 78300136 in words is "seventy-eight million, three hundred thousand, one hundred thirty-six".