11721792 has 28 divisors (see below), whose sum is σ = 31014416. Its totient is φ = 3907200.

The previous prime is 11721791. The next prime is 11721793. The reversal of 11721792 is 29712711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11721791) and next prime (11721793).

It is not an unprimeable number, because it can be changed into a prime (11721791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30334 + ... + 30717.

Almost surely, 2^11721792 is an apocalyptic number.

11721792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11721792 is an abundant number, since it is smaller than the sum of its proper divisors (19292624).

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

11721792 is an equidigital number, since it uses as much as digits as its factorization.

11721792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61066 (or 61056 counting only the distinct ones).

The product of its digits is 1764, while the sum is 30.

The square root of 11721792 is about 3423.7102681156. The cubic root of 11721792 is about 227.1597263800.

The spelling of 11721792 in words is "eleven million, seven hundred twenty-one thousand, seven hundred ninety-two".