78265158 has 8 divisors (see below), whose sum is σ = 156530328. Its totient is φ = 26088384.

The previous prime is 78265157. The next prime is 78265169. The reversal of 78265158 is 85156287.

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

78265158 is an admirable number.

It is a super-2 number, since 2×78265158² = 12250869913529928, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78265157) 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, 6522091 + ... + 6522102.

It is an arithmetic number, because the mean of its divisors is an integer number (19566291).

Almost surely, 2^78265158 is an apocalyptic number.

78265158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78265158 is a wasteful number, since it uses less digits than its factorization.

78265158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13044198.

The product of its digits is 134400, while the sum is 42.

The square root of 78265158 is about 8846.7597458052. The cubic root of 78265158 is about 427.7494785400.

The spelling of 78265158 in words is "seventy-eight million, two hundred sixty-five thousand, one hundred fifty-eight".