87823772 has 6 divisors (see below), whose sum is σ = 153691608. Its totient is φ = 43911884.

The previous prime is 87823753. The next prime is 87823787. The reversal of 87823772 is 27732878.

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 as a sum of consecutive naturals, namely, 10977968 + ... + 10977975.

It is an arithmetic number, because the mean of its divisors is an integer number (25615268).

Almost surely, 2^87823772 is an apocalyptic number.

It is an amenable number.

87823772 is a deficient number, since it is larger than the sum of its proper divisors (65867836).

87823772 is a wasteful number, since it uses less digits than its factorization.

87823772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21955947 (or 21955945 counting only the distinct ones).

The product of its digits is 263424, while the sum is 44.

The square root of 87823772 is about 9371.4338283957. The cubic root of 87823772 is about 444.4989048727.

The spelling of 87823772 in words is "eighty-seven million, eight hundred twenty-three thousand, seven hundred seventy-two".