11002640 has 40 divisors (see below), whose sum is σ = 27908928. Its totient is φ = 4000640.

The previous prime is 11002639. The next prime is 11002643. The reversal of 11002640 is 4620011.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (11002643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5372 + ... + 7131.

Almost surely, 2^11002640 is an apocalyptic number.

11002640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11002640 is an abundant number, since it is smaller than the sum of its proper divisors (16906288).

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

11002640 is a wasteful number, since it uses less digits than its factorization.

11002640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12527 (or 12521 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11002640 is about 3317.0227614534. The cubic root of 11002640 is about 222.4157994745.

Adding to 11002640 its reverse (4620011), we get a palindrome (15622651).

The spelling of 11002640 in words is "eleven million, two thousand, six hundred forty".