11634021 has 72 divisors (see below), whose sum is σ = 21625344. Its totient is φ = 5987520.

The previous prime is 11634011. The next prime is 11634041. The reversal of 11634021 is 12043611.

It is a happy number.

11634021 is a `hidden beast` number, since 11 + 634 + 0 + 21 = 666.

It is not a de Polignac number, because 11634021 - 2⁷ = 11633893 is a prime.

It is a super-4 number, since 4×11634021⁴ (a number of 29 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11633985 and 11634003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11634011) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 314415 + ... + 314451.

It is an arithmetic number, because the mean of its divisors is an integer number (300352).

Almost surely, 2^11634021 is an apocalyptic number.

It is an amenable number.

11634021 is a deficient number, since it is larger than the sum of its proper divisors (9991323).

11634021 is a wasteful number, since it uses less digits than its factorization.

11634021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 101 counting only the distinct ones).

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

The square root of 11634021 is about 3410.8680713273. The cubic root of 11634021 is about 226.5913261237.

Adding to 11634021 its reverse (12043611), we get a palindrome (23677632).

It can be divided in two parts, 1163 and 4021, that added together give a square (5184 = 72²).

The spelling of 11634021 in words is "eleven million, six hundred thirty-four thousand, twenty-one".