11247639 has 32 divisors (see below), whose sum is σ = 17445120. Its totient is φ = 6386688.

The previous prime is 11247631. The next prime is 11247683. The reversal of 11247639 is 93674211.

11247639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11247639 - 2³ = 11247631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11247631) 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 31 ways as a sum of consecutive naturals, for example, 31687 + ... + 32039.

It is an arithmetic number, because the mean of its divisors is an integer number (545160).

Almost surely, 2^11247639 is an apocalyptic number.

11247639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11247639 is a deficient number, since it is larger than the sum of its proper divisors (6197481).

11247639 is a wasteful number, since it uses less digits than its factorization.

11247639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its digits is 9072, while the sum is 33.

The square root of 11247639 is about 3353.7499906821. The cubic root of 11247639 is about 224.0545612732.

The spelling of 11247639 in words is "eleven million, two hundred forty-seven thousand, six hundred thirty-nine".