11369721 has 16 divisors (see below), whose sum is σ = 16689600. Its totient is φ = 6827520.

The previous prime is 11369707. The next prime is 11369737. The reversal of 11369721 is 12796311.

It is not a de Polignac number, because 11369721 - 2⁵ = 11369689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11369741) 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, 2205 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (1043100).

Almost surely, 2^11369721 is an apocalyptic number.

11369721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11369721 is a deficient number, since it is larger than the sum of its proper divisors (5319879).

11369721 is a wasteful number, since it uses less digits than its factorization.

11369721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176.

The product of its digits is 2268, while the sum is 30.

The square root of 11369721 is about 3371.9016889583. The cubic root of 11369721 is about 224.8622762095.

It can be divided in two parts, 11369 and 721, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 11369721 in words is "eleven million, three hundred sixty-nine thousand, seven hundred twenty-one".