11421830 has 16 divisors (see below), whose sum is σ = 23496480. Its totient is φ = 3916032.

The previous prime is 11421803. The next prime is 11421859. The reversal of 11421830 is 3812411.

It is a congruent number.

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, 81515 + ... + 81654.

It is an arithmetic number, because the mean of its divisors is an integer number (1468530).

Almost surely, 2^11421830 is an apocalyptic number.

11421830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11421830 is an abundant number, since it is smaller than the sum of its proper divisors (12074650).

11421830 is a wasteful number, since it uses less digits than its factorization.

11421830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163183.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 11421830 is about 3379.6198011019. The cubic root of 11421830 is about 225.2052776795.

Subtracting from 11421830 its sum of digits (20), we obtain a triangular number (11421810 = T₄₇₇₉).

The spelling of 11421830 in words is "eleven million, four hundred twenty-one thousand, eight hundred thirty".