87715842 has 16 divisors (see below), whose sum is σ = 176509920. Its totient is φ = 29058912.

The previous prime is 87715787. The next prime is 87715883. The reversal of 87715842 is 24851778.

It is a junction number, because it is equal to n+sod(n) for n = 87715794 and 87715803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43867 + ... + 45822.

It is an arithmetic number, because the mean of its divisors is an integer number (11031870).

Almost surely, 2^87715842 is an apocalyptic number.

87715842 is an abundant number, since it is smaller than the sum of its proper divisors (88794078).

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

87715842 is a wasteful number, since it uses less digits than its factorization.

87715842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89857.

The product of its digits is 125440, while the sum is 42.

The square root of 87715842 is about 9365.6736009750. The cubic root of 87715842 is about 444.3167429826.

The spelling of 87715842 in words is "eighty-seven million, seven hundred fifteen thousand, eight hundred forty-two".