11421630 has 96 divisors (see below), whose sum is σ = 33022080. Its totient is φ = 2715840.

The previous prime is 11421629. The next prime is 11421661. The reversal of 11421630 is 3612411.

It is a happy number.

11421630 is a `hidden beast` number, since 1 + 14 + 21 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82101 + ... + 82239.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^11421630 is an apocalyptic number.

11421630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11421630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16511040).

11421630 is an abundant number, since it is smaller than the sum of its proper divisors (21600450).

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

11421630 is a wasteful number, since it uses less digits than its factorization.

11421630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 11421630 is about 3379.5902118452. The cubic root of 11421630 is about 225.2039631990.

It can be divided in two parts, 1142 and 1630, that added together give a palindrome (2772).

The spelling of 11421630 in words is "eleven million, four hundred twenty-one thousand, six hundred thirty".