11421730 has 16 divisors (see below), whose sum is σ = 20615544. Its totient is φ = 4556160.

The previous prime is 11421721. The next prime is 11421749. The reversal of 11421730 is 3712411.

It can be written as a sum of positive squares in 4 ways, for example, as 8922169 + 2499561 = 2987^2 + 1581^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11421698 and 11421707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2854 + ... + 5566.

Almost surely, 2^11421730 is an apocalyptic number.

11421730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11421730 is a deficient number, since it is larger than the sum of its proper divisors (9193814).

11421730 is a wasteful number, since it uses less digits than its factorization.

11421730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 11421730 is about 3379.6050065059. The cubic root of 11421730 is about 225.2046204412.

The spelling of 11421730 in words is "eleven million, four hundred twenty-one thousand, seven hundred thirty".