10081990 has 8 divisors (see below), whose sum is σ = 18147600. Its totient is φ = 4032792.

The previous prime is 10081987. The next prime is 10081991. The reversal of 10081990 is 9918001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10081991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504090 + ... + 504109.

It is an arithmetic number, because the mean of its divisors is an integer number (2268450).

Almost surely, 2^10081990 is an apocalyptic number.

10081990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10081990 is a deficient number, since it is larger than the sum of its proper divisors (8065610).

10081990 is a wasteful number, since it uses less digits than its factorization.

10081990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008206.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 10081990 is about 3175.2149533536. The cubic root of 10081990 is about 216.0306740846.

Adding to 10081990 its reverse (9918001), we get a palindrome (19999991).

The spelling of 10081990 in words is "ten million, eighty-one thousand, nine hundred ninety".