78030136 has 32 divisors (see below), whose sum is σ = 157114080. Its totient is φ = 36198400.

The previous prime is 78030133. The next prime is 78030137. The reversal of 78030136 is 63103087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78030133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5616 + ... + 13696.

It is an arithmetic number, because the mean of its divisors is an integer number (4909815).

Almost surely, 2^78030136 is an apocalyptic number.

It is an amenable number.

78030136 is an abundant number, since it is smaller than the sum of its proper divisors (79083944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78030136 is a wasteful number, since it uses less digits than its factorization.

78030136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8175 (or 8171 counting only the distinct ones).

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

The square root of 78030136 is about 8833.4668166015. The cubic root of 78030136 is about 427.3208870856.

The spelling of 78030136 in words is "seventy-eight million, thirty thousand, one hundred thirty-six".