87198378 has 8 divisors (see below), whose sum is σ = 174396768. Its totient is φ = 29066124.

The previous prime is 87198361. The next prime is 87198403. The reversal of 87198378 is 87389178.

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

87198378 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 87198378.

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, 7266526 + ... + 7266537.

It is an arithmetic number, because the mean of its divisors is an integer number (21799596).

Almost surely, 2^87198378 is an apocalyptic number.

87198378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87198378 is a wasteful number, since it uses less digits than its factorization.

87198378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14533068.

The product of its digits is 677376, while the sum is 51.

The square root of 87198378 is about 9338.0071749812. The cubic root of 87198378 is about 443.4412966876.

The spelling of 87198378 in words is "eighty-seven million, one hundred ninety-eight thousand, three hundred seventy-eight".