20087532 has 18 divisors (see below), whose sum is σ = 50776908. Its totient is φ = 6695832.

The previous prime is 20087531. The next prime is 20087537. The reversal of 20087532 is 23578002.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 20087496 and 20087505.

It is not an unprimeable number, because it can be changed into a prime (20087531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278958 + ... + 279029.

Almost surely, 2^20087532 is an apocalyptic number.

It is an amenable number.

20087532 is an abundant number, since it is smaller than the sum of its proper divisors (30689376).

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

20087532 is a wasteful number, since it uses less digits than its factorization.

20087532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557997 (or 557992 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20087532 is about 4481.9116457155. The cubic root of 20087532 is about 271.8371826908.

The spelling of 20087532 in words is "twenty million, eighty-seven thousand, five hundred thirty-two".