32572140 has 48 divisors (see below), whose sum is σ = 95171328. Its totient is φ = 8307904.

The previous prime is 32572123. The next prime is 32572147. The reversal of 32572140 is 4127523.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 32572140.

It is not an unprimeable number, because it can be changed into a prime (32572147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10422 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (1982736).

Almost surely, 2^32572140 is an apocalyptic number.

32572140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32572140 is an abundant number, since it is smaller than the sum of its proper divisors (62599188).

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

32572140 is a wasteful number, since it uses less digits than its factorization.

32572140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23638 (or 23636 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 32572140 is about 5707.2007148864. The cubic root of 32572140 is about 319.3611603819.

Adding to 32572140 its reverse (4127523), we get a palindrome (36699663).

The spelling of 32572140 in words is "thirty-two million, five hundred seventy-two thousand, one hundred forty".