87532780 has 24 divisors (see below), whose sum is σ = 184307760. Its totient is φ = 34920000.

The previous prime is 87532771. The next prime is 87532801. The reversal of 87532780 is 8723578.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2155 + ... + 13405.

It is an arithmetic number, because the mean of its divisors is an integer number (7679490).

Almost surely, 2^87532780 is an apocalyptic number.

It is an amenable number.

87532780 is an abundant number, since it is smaller than the sum of its proper divisors (96774980).

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

87532780 is a wasteful number, since it uses less digits than its factorization.

87532780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11649 (or 11647 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 87532780 is about 9355.8954675648. The cubic root of 87532780 is about 444.0074329843.

The spelling of 87532780 in words is "eighty-seven million, five hundred thirty-two thousand, seven hundred eighty".