32020140 has 48 divisors (see below), whose sum is σ = 93558528. Its totient is φ = 8167104.

The previous prime is 32020127. The next prime is 32020159. The reversal of 32020140 is 4102023.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a nialpdrome in base 12.

It is a zygodrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10222 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (1949136).

Almost surely, 2^32020140 is an apocalyptic number.

32020140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32020140 is an abundant number, since it is smaller than the sum of its proper divisors (61538388).

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

32020140 is a wasteful number, since it uses less digits than its factorization.

32020140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23238 (or 23236 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 32020140 is about 5658.6341108080. The cubic root of 32020140 is about 317.5468011279.

Adding to 32020140 its reverse (4102023), we get a palindrome (36122163).

The spelling of 32020140 in words is "thirty-two million, twenty thousand, one hundred forty".