11720037 has 16 divisors (see below), whose sum is σ = 18275840. Its totient is φ = 6540912.

The previous prime is 11720029. The next prime is 11720039. The reversal of 11720037 is 73002711.

It is not a de Polignac number, because 11720037 - 2³ = 11720029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11719995 and 11720022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11720039) 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, 5587 + ... + 7392.

It is an arithmetic number, because the mean of its divisors is an integer number (1142240).

Almost surely, 2^11720037 is an apocalyptic number.

It is an amenable number.

11720037 is a deficient number, since it is larger than the sum of its proper divisors (6555803).

11720037 is a wasteful number, since it uses less digits than its factorization.

11720037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13032.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 11720037 is about 3423.4539576282. The cubic root of 11720037 is about 227.1483889435.

Adding to 11720037 its reverse (73002711), we get a palindrome (84722748).

The spelling of 11720037 in words is "eleven million, seven hundred twenty thousand, thirty-seven".