78515230 has 8 divisors (see below), whose sum is σ = 141327432. Its totient is φ = 31406088.

The previous prime is 78515191. The next prime is 78515233. The reversal of 78515230 is 3251587.

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

It is a junction number, because it is equal to n+sod(n) for n = 78515192 and 78515201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78515233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3925752 + ... + 3925771.

It is an arithmetic number, because the mean of its divisors is an integer number (17665929).

Almost surely, 2^78515230 is an apocalyptic number.

78515230 is a deficient number, since it is larger than the sum of its proper divisors (62812202).

78515230 is a wasteful number, since it uses less digits than its factorization.

78515230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7851530.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 78515230 is about 8860.8820102741. The cubic root of 78515230 is about 428.2045743718.

The spelling of 78515230 in words is "seventy-eight million, five hundred fifteen thousand, two hundred thirty".