78381358 has 8 divisors (see below), whose sum is σ = 128260440. Its totient is φ = 35627880.

The previous prime is 78381337. The next prime is 78381367. The reversal of 78381358 is 85318387.

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

It is a super-2 number, since 2×78381358² = 12287274563848328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781373 + ... + 1781416.

It is an arithmetic number, because the mean of its divisors is an integer number (16032555).

Almost surely, 2^78381358 is an apocalyptic number.

78381358 is a deficient number, since it is larger than the sum of its proper divisors (49879082).

78381358 is a wasteful number, since it uses less digits than its factorization.

78381358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562802.

The product of its digits is 161280, while the sum is 43.

The square root of 78381358 is about 8853.3246862408. The cubic root of 78381358 is about 427.9610665665.

The spelling of 78381358 in words is "seventy-eight million, three hundred eighty-one thousand, three hundred fifty-eight".