10491380 has 48 divisors (see below), whose sum is σ = 23768640. Its totient is φ = 3875328.

The previous prime is 10491379. The next prime is 10491389. The reversal of 10491380 is 8319401.

It is a super-2 number, since 2×10491380² = 220138108608800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10491389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19799 + ... + 20321.

It is an arithmetic number, because the mean of its divisors is an integer number (495180).

Almost surely, 2^10491380 is an apocalyptic number.

10491380 is a gapful number since it is divisible by the number (10) 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 10491380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11884320).

10491380 is an abundant number, since it is smaller than the sum of its proper divisors (13277260).

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

10491380 is a wasteful number, since it uses less digits than its factorization.

10491380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 10491380 is about 3239.0399812290. The cubic root of 10491380 is about 218.9160176445.

The spelling of 10491380 in words is "ten million, four hundred ninety-one thousand, three hundred eighty".