21414156 has 24 divisors (see below), whose sum is σ = 50233344. Its totient is φ = 7099920.

The previous prime is 21414119. The next prime is 21414193. The reversal of 21414156 is 65141412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21414119) and next prime (21414193).

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, 2380 + ... + 6963.

It is an arithmetic number, because the mean of its divisors is an integer number (2093056).

Almost surely, 2^21414156 is an apocalyptic number.

It is an amenable number.

21414156 is an abundant number, since it is smaller than the sum of its proper divisors (28819188).

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

21414156 is a wasteful number, since it uses less digits than its factorization.

21414156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9541 (or 9539 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 21414156 is about 4627.5431926671. The cubic root of 21414156 is about 277.6943140294.

Adding to 21414156 its reverse (65141412), we get a palindrome (86555568).

The spelling of 21414156 in words is "twenty-one million, four hundred fourteen thousand, one hundred fifty-six".