87122838 has 32 divisors (see below), whose sum is σ = 190667520. Its totient is φ = 26320160.

The previous prime is 87122813. The next prime is 87122843. The reversal of 87122838 is 83822178.

It is a junction number, because it is equal to n+sod(n) for n = 87122796 and 87122805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21856 + ... + 25532.

It is an arithmetic number, because the mean of its divisors is an integer number (5958360).

Almost surely, 2^87122838 is an apocalyptic number.

87122838 is an abundant number, since it is smaller than the sum of its proper divisors (103544682).

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

87122838 is a wasteful number, since it uses less digits than its factorization.

87122838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052.

The product of its digits is 43008, while the sum is 39.

The square root of 87122838 is about 9333.9615383823. The cubic root of 87122838 is about 443.3132085512.

The spelling of 87122838 in words is "eighty-seven million, one hundred twenty-two thousand, eight hundred thirty-eight".