11621728 has 12 divisors (see below), whose sum is σ = 22880340. Its totient is φ = 5810848.

The previous prime is 11621723. The next prime is 11621773. The reversal of 11621728 is 82712611.

It is a junction number, because it is equal to n+sod(n) for n = 11621696 and 11621705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181558 + ... + 181621.

It is an arithmetic number, because the mean of its divisors is an integer number (1906695).

Almost surely, 2^11621728 is an apocalyptic number.

It is an amenable number.

11621728 is a deficient number, since it is larger than the sum of its proper divisors (11258612).

11621728 is an equidigital number, since it uses as much as digits as its factorization.

11621728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363189 (or 363181 counting only the distinct ones).

The product of its digits is 1344, while the sum is 28.

The square root of 11621728 is about 3409.0655611179. The cubic root of 11621728 is about 226.5114893291.

The spelling of 11621728 in words is "eleven million, six hundred twenty-one thousand, seven hundred twenty-eight".