78437378 has 8 divisors (see below), whose sum is σ = 121451520. Its totient is φ = 37953540.

The previous prime is 78437341. The next prime is 78437389. The reversal of 78437378 is 87373487.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632498 + ... + 632621.

It is an arithmetic number, because the mean of its divisors is an integer number (15181440).

Almost surely, 2^78437378 is an apocalyptic number.

78437378 is a deficient number, since it is larger than the sum of its proper divisors (43014142).

78437378 is a wasteful number, since it uses less digits than its factorization.

78437378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265152.

The product of its digits is 790272, while the sum is 47.

The square root of 78437378 is about 8856.4879043558. The cubic root of 78437378 is about 428.0629984129.

The spelling of 78437378 in words is "seventy-eight million, four hundred thirty-seven thousand, three hundred seventy-eight".