11621730 has 32 divisors (see below), whose sum is σ = 29361600. Its totient is φ = 2935872.

The previous prime is 11621723. The next prime is 11621773. The reversal of 11621730 is 3712611.

It is a junction number, because it is equal to n+sod(n) for n = 11621697 and 11621706.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9625 + ... + 10764.

It is an arithmetic number, because the mean of its divisors is an integer number (917550).

Almost surely, 2^11621730 is an apocalyptic number.

11621730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11621730 is an abundant number, since it is smaller than the sum of its proper divisors (17739870).

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

11621730 is a wasteful number, since it uses less digits than its factorization.

11621730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20418.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 11621730 is about 3409.0658544534. The cubic root of 11621730 is about 226.5115023227.

The spelling of 11621730 in words is "eleven million, six hundred twenty-one thousand, seven hundred thirty".