78100378 has 8 divisors (see below), whose sum is σ = 117235872. Its totient is φ = 39021756.

The previous prime is 78100369. The next prime is 78100391. The reversal of 78100378 is 87300187.

It is a happy number.

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

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, 10600 + ... + 16387.

It is an arithmetic number, because the mean of its divisors is an integer number (14654484).

Almost surely, 2^78100378 is an apocalyptic number.

78100378 is a deficient number, since it is larger than the sum of its proper divisors (39135494).

78100378 is a wasteful number, since it uses less digits than its factorization.

78100378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28436.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 78100378 is about 8837.4418244196. The cubic root of 78100378 is about 427.4490720541.

The spelling of 78100378 in words is "seventy-eight million, one hundred thousand, three hundred seventy-eight".