32640139 has 8 divisors (see below), whose sum is σ = 38170880. Its totient is φ = 27326376.

The previous prime is 32640133. The next prime is 32640161. The reversal of 32640139 is 93104623.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 32640139 - 2³ = 32640131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32640131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53919 + ... + 54520.

It is an arithmetic number, because the mean of its divisors is an integer number (4771360).

Almost surely, 2^32640139 is an apocalyptic number.

32640139 is a deficient number, since it is larger than the sum of its proper divisors (5530741).

32640139 is a wasteful number, since it uses less digits than its factorization.

32640139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108489.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 32640139 is about 5713.1549077546. The cubic root of 32640139 is about 319.5832432736.

The spelling of 32640139 in words is "thirty-two million, six hundred forty thousand, one hundred thirty-nine".