87021032 has 16 divisors (see below), whose sum is σ = 186473760. Its totient is φ = 37294704.

The previous prime is 87021031. The next prime is 87021041. The reversal of 87021032 is 23012078.

It is a junction number, because it is equal to n+sod(n) for n = 87020989 and 87021007.

It is not an unprimeable number, because it can be changed into a prime (87021031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776918 + ... + 777029.

It is an arithmetic number, because the mean of its divisors is an integer number (11654610).

Almost surely, 2^87021032 is an apocalyptic number.

It is an amenable number.

87021032 is an abundant number, since it is smaller than the sum of its proper divisors (99452728).

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

87021032 is a wasteful number, since it uses less digits than its factorization.

87021032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553960 (or 1553956 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 87021032 is about 9328.5064185002. The cubic root of 87021032 is about 443.1404657268.

The spelling of 87021032 in words is "eighty-seven million, twenty-one thousand, thirty-two".