10002491 has 8 divisors (see below), whose sum is σ = 10377600. Its totient is φ = 9630720.

The previous prime is 10002481. The next prime is 10002521. The reversal of 10002491 is 19420001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10002491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10002431) 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, 6395 + ... + 7803.

It is an arithmetic number, because the mean of its divisors is an integer number (1297200).

Almost surely, 2^10002491 is an apocalyptic number.

10002491 is a deficient number, since it is larger than the sum of its proper divisors (375109).

10002491 is a wasteful number, since it uses less digits than its factorization.

10002491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 10002491 is about 3162.6714973263. The cubic root of 10002491 is about 215.4613565074.

Adding to 10002491 its reverse (19420001), we get a palindrome (29422492).

The spelling of 10002491 in words is "ten million, two thousand, four hundred ninety-one".