87081378 has 16 divisors (see below), whose sum is σ = 184407840. Its totient is φ = 27319616.

The previous prime is 87081377. The next prime is 87081383. The reversal of 87081378 is 87318078.

It is not an unprimeable number, because it can be changed into a prime (87081373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426768 + ... + 426971.

It is an arithmetic number, because the mean of its divisors is an integer number (11525490).

Almost surely, 2^87081378 is an apocalyptic number.

87081378 is an abundant number, since it is smaller than the sum of its proper divisors (97326462).

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

87081378 is a wasteful number, since it uses less digits than its factorization.

87081378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853761.

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 87081378 is about 9331.7403521530. The cubic root of 87081378 is about 443.2428761243.

The spelling of 87081378 in words is "eighty-seven million, eighty-one thousand, three hundred seventy-eight".