32021010 has 144 divisors (see below), whose sum is σ = 99394776. Its totient is φ = 7128576.

The previous prime is 32021009. The next prime is 32021027. The reversal of 32021010 is 1012023.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29127609 + 2893401 = 5397^2 + 1701^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 32020983 and 32021001.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 233662 + ... + 233798.

Almost surely, 2^32021010 is an apocalyptic number.

32021010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 32021010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49697388).

32021010 is an abundant number, since it is smaller than the sum of its proper divisors (67373766).

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

32021010 is a wasteful number, since it uses less digits than its factorization.

32021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 32021010 is about 5658.7109839609. The cubic root of 32021010 is about 317.5496770597.

Adding to 32021010 its reverse (1012023), we get a palindrome (33033033).

The spelling of 32021010 in words is "thirty-two million, twenty-one thousand, ten".