87381894 has 8 divisors (see below), whose sum is σ = 174763800. Its totient is φ = 29127296.

The previous prime is 87381851. The next prime is 87381919. The reversal of 87381894 is 49818378.

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

87381894 is an admirable number.

It is a Curzon number.

It is a congruent number.

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, 7281819 + ... + 7281830.

It is an arithmetic number, because the mean of its divisors is an integer number (21845475).

Almost surely, 2^87381894 is an apocalyptic number.

87381894 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.

87381894 is a wasteful number, since it uses less digits than its factorization.

87381894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14563654.

The product of its digits is 387072, while the sum is 48.

The square root of 87381894 is about 9347.8283039431. The cubic root of 87381894 is about 443.7521646658.

The spelling of 87381894 in words is "eighty-seven million, three hundred eighty-one thousand, eight hundred ninety-four".