87551828 has 36 divisors (see below), whose sum is σ = 191946132. Its totient is φ = 34634880.

The previous prime is 87551801. The next prime is 87551837. The reversal of 87551828 is 82815578.

It can be written as a sum of positive squares in 2 ways, for example, as 42016324 + 45535504 = 6482^2 + 6748^2 .

It is a super-3 number, since 3×87551828³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14633 + ... + 19728.

It is an arithmetic number, because the mean of its divisors is an integer number (5331837).

Almost surely, 2^87551828 is an apocalyptic number.

It is an amenable number.

87551828 is an abundant number, since it is smaller than the sum of its proper divisors (104394304).

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

87551828 is a wasteful number, since it uses less digits than its factorization.

87551828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34392 (or 34383 counting only the distinct ones).

The product of its digits is 179200, while the sum is 44.

The square root of 87551828 is about 9356.9133799560. The cubic root of 87551828 is about 444.0396374537.

The spelling of 87551828 in words is "eighty-seven million, five hundred fifty-one thousand, eight hundred twenty-eight".