10491408 has 60 divisors (see below), whose sum is σ = 30094428. Its totient is φ = 3409920.

The previous prime is 10491407. The next prime is 10491413. The reversal of 10491408 is 80419401.

It can be written as a sum of positive squares in 2 ways, for example, as 2471184 + 8020224 = 1572^2 + 2832^2 .

It is a super-2 number, since 2×10491408² = 220139283644928, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10491407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5016 + ... + 6792.

Almost surely, 2^10491408 is an apocalyptic number.

10491408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10491408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15047214).

10491408 is an abundant number, since it is smaller than the sum of its proper divisors (19603020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10491408 is a wasteful number, since it uses less digits than its factorization.

10491408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 10491408 is about 3239.0443034945. The cubic root of 10491408 is about 218.9162123963.

The spelling of 10491408 in words is "ten million, four hundred ninety-one thousand, four hundred eight".