78141078 has 32 divisors (see below), whose sum is σ = 183863520. Its totient is φ = 24514560.

The previous prime is 78141073. The next prime is 78141079. The reversal of 78141078 is 87014187.

It is a super-2 number, since 2×78141078² = 12212056142004168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78141071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41643 + ... + 43478.

It is an arithmetic number, because the mean of its divisors is an integer number (5745735).

Almost surely, 2^78141078 is an apocalyptic number.

78141078 is an abundant number, since it is smaller than the sum of its proper divisors (105722442).

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

78141078 is a wasteful number, since it uses less digits than its factorization.

78141078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85149 (or 85143 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 78141078 is about 8839.7442270690. The cubic root of 78141078 is about 427.5233105172.

The spelling of 78141078 in words is "seventy-eight million, one hundred forty-one thousand, seventy-eight".