78371378 has 16 divisors (see below), whose sum is σ = 118812096. Its totient is φ = 38769840.

The previous prime is 78371341. The next prime is 78371389. The reversal of 78371378 is 87317387.

It is a super-2 number, since 2×78371378² = 12284145779237768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101000 + ... + 101772.

It is an arithmetic number, because the mean of its divisors is an integer number (7425756).

Almost surely, 2^78371378 is an apocalyptic number.

78371378 is a deficient number, since it is larger than the sum of its proper divisors (40440718).

78371378 is a wasteful number, since it uses less digits than its factorization.

78371378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249.

The product of its digits is 197568, while the sum is 44.

The square root of 78371378 is about 8852.7610382298. The cubic root of 78371378 is about 427.9429022443.

The spelling of 78371378 in words is "seventy-eight million, three hundred seventy-one thousand, three hundred seventy-eight".