11927513 has 16 divisors (see below), whose sum is σ = 13280400. Its totient is φ = 10707840.

The previous prime is 11927483. The next prime is 11927521. The reversal of 11927513 is 31572911.

It can be written as a sum of positive squares in 8 ways, for example, as 11744329 + 183184 = 3427^2 + 428^2 .

It is not a de Polignac number, because 11927513 - 2⁶ = 11927449 is a prime.

It is a Duffinian number.

11927513 is a Rhonda number in base 10.

Its product of digits (1890) is a multiple of the sum of its prime factors (189).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11927533) 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, 133973 + ... + 134061.

It is an arithmetic number, because the mean of its divisors is an integer number (830025).

Almost surely, 2^11927513 is an apocalyptic number.

11927513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11927513 is a deficient number, since it is larger than the sum of its proper divisors (1352887).

11927513 is an frugal number, since it uses more digits than its factorization.

11927513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 163 counting only the distinct ones).

The product of its digits is 1890, while the sum is 29.

The square root of 11927513 is about 3453.6231699478. The cubic root of 11927513 is about 228.4809343965.

The spelling of 11927513 in words is "eleven million, nine hundred twenty-seven thousand, five hundred thirteen".