32100020 has 12 divisors (see below), whose sum is σ = 67410084. Its totient is φ = 12840000.

The previous prime is 32100017. The next prime is 32100031. The reversal of 32100020 is 2000123.

It can be written as a sum of positive squares in 2 ways, for example, as 21196816 + 10903204 = 4604^2 + 3302^2 .

It is a super-2 number, since 2×32100020² = 2060822568000800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32099980 and 32100007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802481 + ... + 802520.

It is an arithmetic number, because the mean of its divisors is an integer number (5617507).

Almost surely, 2^32100020 is an apocalyptic number.

It is an amenable number.

32100020 is an abundant number, since it is smaller than the sum of its proper divisors (35310064).

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

32100020 is a wasteful number, since it uses less digits than its factorization.

32100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605010 (or 1605008 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 32100020 is about 5665.6879546971. The cubic root of 32100020 is about 317.8106410591.

Adding to 32100020 its reverse (2000123), we get a palindrome (34100143).

The spelling of 32100020 in words is "thirty-two million, one hundred thousand, twenty".