78378968 has 8 divisors (see below), whose sum is σ = 146960580. Its totient is φ = 39189480.

The previous prime is 78378941. The next prime is 78378991. The reversal of 78378968 is 86987387.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78378968² = 12286525249490048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4898678 + ... + 4898693.

Almost surely, 2^78378968 is an apocalyptic number.

It is an amenable number.

78378968 is a deficient number, since it is larger than the sum of its proper divisors (68581612).

78378968 is a wasteful number, since it uses less digits than its factorization.

78378968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9797377 (or 9797373 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 56.

The square root of 78378968 is about 8853.1897076703. The cubic root of 78378968 is about 427.9567167340.

The spelling of 78378968 in words is "seventy-eight million, three hundred seventy-eight thousand, nine hundred sixty-eight".