87889460 has 12 divisors (see below), whose sum is σ = 184567908. Its totient is φ = 35155776.

The previous prime is 87889457. The next prime is 87889481. The reversal of 87889460 is 6498878.

It can be written as a sum of positive squares in 2 ways, for example, as 44382244 + 43507216 = 6662^2 + 6596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87889399 and 87889408.

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 3 ways as a sum of consecutive naturals, for example, 2197217 + ... + 2197256.

It is an arithmetic number, because the mean of its divisors is an integer number (15380659).

Almost surely, 2^87889460 is an apocalyptic number.

It is an amenable number.

87889460 is an abundant number, since it is smaller than the sum of its proper divisors (96678448).

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

87889460 is a wasteful number, since it uses less digits than its factorization.

87889460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394482 (or 4394480 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 87889460 is about 9374.9378664608. The cubic root of 87889460 is about 444.6096985936.

It can be divided in two parts, 87 and 889460, that multiplied together give a triangular number (77383020 = T₁₂₄₄₀).

The spelling of 87889460 in words is "eighty-seven million, eight hundred eighty-nine thousand, four hundred sixty".