10491240 has 32 divisors (see below), whose sum is σ = 31474080. Its totient is φ = 2797632.

The previous prime is 10491233. The next prime is 10491241. The reversal of 10491240 is 4219401.

It is a super-2 number, since 2×10491240² = 220132233475200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10491241) 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, 43594 + ... + 43833.

It is an arithmetic number, because the mean of its divisors is an integer number (983565).

Almost surely, 2^10491240 is an apocalyptic number.

10491240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10491240 is an abundant number, since it is smaller than the sum of its proper divisors (20982840).

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

10491240 is a wasteful number, since it uses less digits than its factorization.

10491240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87441 (or 87437 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 10491240 is about 3239.0183698152. The cubic root of 10491240 is about 218.9150438807.

It can be divided in two parts, 10491 and 240, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 10491240 in words is "ten million, four hundred ninety-one thousand, two hundred forty".