78378358 has 16 divisors (see below), whose sum is σ = 124912080. Its totient is φ = 36814176.

The previous prime is 78378353. The next prime is 78378397. The reversal of 78378358 is 85387387.

It is a super-2 number, since 2×78378358² = 12286334005552328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78378353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16116 + ... + 20407.

It is an arithmetic number, because the mean of its divisors is an integer number (7807005).

Almost surely, 2^78378358 is an apocalyptic number.

78378358 is a deficient number, since it is larger than the sum of its proper divisors (46533722).

78378358 is a wasteful number, since it uses less digits than its factorization.

78378358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36591.

The product of its digits is 1128960, while the sum is 49.

The square root of 78378358 is about 8853.1552567432. The cubic root of 78378358 is about 427.9556065115.

The spelling of 78378358 in words is "seventy-eight million, three hundred seventy-eight thousand, three hundred fifty-eight".