21200414 has 4 divisors (see below), whose sum is σ = 31800624. Its totient is φ = 10600206.

The previous prime is 21200401. The next prime is 21200461. The reversal of 21200414 is 41400212.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300102 + ... + 5300105.

It is an arithmetic number, because the mean of its divisors is an integer number (7950156).

Almost surely, 2^21200414 is an apocalyptic number.

21200414 is a deficient number, since it is larger than the sum of its proper divisors (10600210).

21200414 is a wasteful number, since it uses less digits than its factorization.

21200414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600209.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 21200414 is about 4604.3907305962. The cubic root of 21200414 is about 276.7673023039.

Adding to 21200414 its reverse (41400212), we get a palindrome (62600626).

The spelling of 21200414 in words is "twenty-one million, two hundred thousand, four hundred fourteen".