32013140 has 24 divisors (see below), whose sum is σ = 69046152. Its totient is φ = 12458880.

The previous prime is 32013133. The next prime is 32013151. The reversal of 32013140 is 4131023.

It can be written as a sum of positive squares in 4 ways, for example, as 9412624 + 22600516 = 3068^2 + 4754^2 .

It is a super-2 number, since 2×32013140² = 2049682265319200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20891 + ... + 22370.

It is an arithmetic number, because the mean of its divisors is an integer number (2876923).

Almost surely, 2^32013140 is an apocalyptic number.

It is an amenable number.

32013140 is an abundant number, since it is smaller than the sum of its proper divisors (37033012).

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

32013140 is a wasteful number, since it uses less digits than its factorization.

32013140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43307 (or 43305 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 32013140 is about 5658.0155531776. The cubic root of 32013140 is about 317.5236595509.

Adding to 32013140 its reverse (4131023), we get a palindrome (36144163).

The spelling of 32013140 in words is "thirty-two million, thirteen thousand, one hundred forty".