32561020 has 12 divisors (see below), whose sum is σ = 68378184. Its totient is φ = 13024400.

The previous prime is 32561017. The next prime is 32561021. The reversal of 32561020 is 2016523.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32561021) 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, 814006 + ... + 814045.

It is an arithmetic number, because the mean of its divisors is an integer number (5698182).

Almost surely, 2^32561020 is an apocalyptic number.

It is an amenable number.

32561020 is an abundant number, since it is smaller than the sum of its proper divisors (35817164).

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

32561020 is a wasteful number, since it uses less digits than its factorization.

32561020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628060 (or 1628058 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 32561020 is about 5706.2264238286. The cubic root of 32561020 is about 319.3248133655.

Adding to 32561020 its reverse (2016523), we get a palindrome (34577543).

The spelling of 32561020 in words is "thirty-two million, five hundred sixty-one thousand, twenty".