10487981 has 8 divisors (see below), whose sum is σ = 12617280. Its totient is φ = 8516448.

The previous prime is 10487969. The next prime is 10487999. The reversal of 10487981 is 18978401.

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-10487981 is a prime.

It is a super-2 number, since 2×10487981² = 219995490912722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10487921) 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, 39296 + ... + 39561.

It is an arithmetic number, because the mean of its divisors is an integer number (1577160).

Almost surely, 2^10487981 is an apocalyptic number.

It is an amenable number.

10487981 is a deficient number, since it is larger than the sum of its proper divisors (2129299).

10487981 is an equidigital number, since it uses as much as digits as its factorization.

10487981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78883.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 10487981 is about 3238.5152462201. The cubic root of 10487981 is about 218.8923736016.

The spelling of 10487981 in words is "ten million, four hundred eighty-seven thousand, nine hundred eighty-one".