10987440 has 80 divisors (see below), whose sum is σ = 36078048. Its totient is φ = 2756608.

The previous prime is 10987439. The next prime is 10987447. The reversal of 10987440 is 4478901.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (10987447) 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 15 ways as a sum of consecutive naturals, for example, 2734 + ... + 5426.

Almost surely, 2^10987440 is an apocalyptic number.

10987440 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 10987440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18039024).

10987440 is an abundant number, since it is smaller than the sum of its proper divisors (25090608).

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

10987440 is a wasteful number, since it uses less digits than its factorization.

10987440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726 (or 2720 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 10987440 is about 3314.7307582970. The cubic root of 10987440 is about 222.3133307896.

The spelling of 10987440 in words is "ten million, nine hundred eighty-seven thousand, four hundred forty".