78150386 has 8 divisors (see below), whose sum is σ = 117462000. Its totient is φ = 38996388.

The previous prime is 78150383. The next prime is 78150419. The reversal of 78150386 is 68305187.

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

It is a super-2 number, since 2×78150386² = 12214965663897992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78150383) 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, 38156 + ... + 40151.

It is an arithmetic number, because the mean of its divisors is an integer number (14682750).

Almost surely, 2^78150386 is an apocalyptic number.

78150386 is a deficient number, since it is larger than the sum of its proper divisors (39311614).

78150386 is a wasteful number, since it uses less digits than its factorization.

78150386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78808.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 78150386 is about 8840.2706972128. The cubic root of 78150386 is about 427.5402850675.

The spelling of 78150386 in words is "seventy-eight million, one hundred fifty thousand, three hundred eighty-six".