21814052 has 24 divisors (see below), whose sum is σ = 43276800. Its totient is φ = 9537696.

The previous prime is 21814021. The next prime is 21814069. The reversal of 21814052 is 25041812.

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, 10052 + ... + 12027.

It is an arithmetic number, because the mean of its divisors is an integer number (1803200).

Almost surely, 2^21814052 is an apocalyptic number.

It is an amenable number.

21814052 is a deficient number, since it is larger than the sum of its proper divisors (21462748).

21814052 is a wasteful number, since it uses less digits than its factorization.

21814052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22115 (or 22113 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 21814052 is about 4670.5515734226. The cubic root of 21814052 is about 279.4122535224.

Adding to 21814052 its reverse (25041812), we get a palindrome (46855864).

The spelling of 21814052 in words is "twenty-one million, eight hundred fourteen thousand, fifty-two".