11209740 has 48 divisors (see below), whose sum is σ = 32755968. Its totient is φ = 2858944.

The previous prime is 11209739. The next prime is 11209741. The reversal of 11209740 is 4790211.

It is an interprime number because it is at equal distance from previous prime (11209739) and next prime (11209741).

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11209740.

It is not an unprimeable number, because it can be changed into a prime (11209741) 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, 2682 + ... + 5441.

It is an arithmetic number, because the mean of its divisors is an integer number (682416).

Almost surely, 2^11209740 is an apocalyptic number.

11209740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11209740 is an abundant number, since it is smaller than the sum of its proper divisors (21546228).

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

11209740 is a wasteful number, since it uses less digits than its factorization.

11209740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8158 (or 8156 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 11209740 is about 3348.0949807316. The cubic root of 11209740 is about 223.8026269476.

Adding to 11209740 its reverse (4790211), we get a palindrome (15999951).

The spelling of 11209740 in words is "eleven million, two hundred nine thousand, seven hundred forty".