32730491 has 4 divisors (see below), whose sum is σ = 34655832. Its totient is φ = 30805152.

The previous prime is 32730487. The next prime is 32730493. The reversal of 32730491 is 19403723.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32730491 - 2² = 32730487 is a prime.

It is a super-2 number, since 2×32730491² = 2142570082202162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32730493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962645 + ... + 962678.

It is an arithmetic number, because the mean of its divisors is an integer number (8663958).

Almost surely, 2^32730491 is an apocalyptic number.

32730491 is a deficient number, since it is larger than the sum of its proper divisors (1925341).

32730491 is a wasteful number, since it uses less digits than its factorization.

32730491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925340.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 32730491 is about 5721.0568079683. The cubic root of 32730491 is about 319.8778537725.

The spelling of 32730491 in words is "thirty-two million, seven hundred thirty thousand, four hundred ninety-one".