87428703558 has 64 divisors (see below), whose sum is σ = 205475263488. Its totient is φ = 24276412800.

The previous prime is 87428703553. The next prime is 87428703569. The reversal of 87428703558 is 85530782478.

It is a junction number, because it is equal to n+sod(n) for n = 87428703498 and 87428703507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87428703553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1330783 + ... + 1394933.

It is an arithmetic number, because the mean of its divisors is an integer number (3210550992).

Almost surely, 2^87428703558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87428703558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102737631744).

87428703558 is an abundant number, since it is smaller than the sum of its proper divisors (118046559930).

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

87428703558 is a wasteful number, since it uses less digits than its factorization.

87428703558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65077.

The product of its (nonzero) digits is 15052800, while the sum is 57.

The spelling of 87428703558 in words is "eighty-seven billion, four hundred twenty-eight million, seven hundred three thousand, five hundred fifty-eight".