21471196 has 12 divisors (see below), whose sum is σ = 37608480. Its totient is φ = 10725920.

The previous prime is 21471193. The next prime is 21471199. The reversal of 21471196 is 69117412.

It is an interprime number because it is at equal distance from previous prime (21471193) and next prime (21471199).

It is a super-2 number, since 2×21471196² = 922024515340832, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21471193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5325 + ... + 8443.

It is an arithmetic number, because the mean of its divisors is an integer number (3134040).

Almost surely, 2^21471196 is an apocalyptic number.

It is an amenable number.

21471196 is a deficient number, since it is larger than the sum of its proper divisors (16137284).

21471196 is a wasteful number, since it uses less digits than its factorization.

21471196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844 (or 4842 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 21471196 is about 4633.7021915527. The cubic root of 21471196 is about 277.9406563805.

The spelling of 21471196 in words is "twenty-one million, four hundred seventy-one thousand, one hundred ninety-six".