10638490 has 8 divisors (see below), whose sum is σ = 19149300. Its totient is φ = 4255392.

The previous prime is 10638479. The next prime is 10638491. The reversal of 10638490 is 9483601.

It can be written as a sum of positive squares in 2 ways, for example, as 10543009 + 95481 = 3247^2 + 309^2 .

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

It is a super-2 number, since 2×10638490² = 226354938960200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10638491) 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, 531915 + ... + 531934.

Almost surely, 2^10638490 is an apocalyptic number.

10638490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10638490 is a deficient number, since it is larger than the sum of its proper divisors (8510810).

10638490 is a wasteful number, since it uses less digits than its factorization.

10638490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063856.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 10638490 is about 3261.6698177467. The cubic root of 10638490 is about 219.9344846239.

The spelling of 10638490 in words is "ten million, six hundred thirty-eight thousand, four hundred ninety".