21314450 has 24 divisors (see below), whose sum is σ = 39924900. Its totient is φ = 8465600.

The previous prime is 21314443. The next prime is 21314473. The reversal of 21314450 is 5441312.

It can be written as a sum of positive squares in 6 ways, for example, as 4116841 + 17197609 = 2029^2 + 4147^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6020 + ... + 8880.

Almost surely, 2^21314450 is an apocalyptic number.

21314450 is a deficient number, since it is larger than the sum of its proper divisors (18610450).

21314450 is a wasteful number, since it uses less digits than its factorization.

21314450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022 (or 3017 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 21314450 is about 4616.7575201650. The cubic root of 21314450 is about 277.2626545085.

Adding to 21314450 its reverse (5441312), we get a palindrome (26755762).

The spelling of 21314450 in words is "twenty-one million, three hundred fourteen thousand, four hundred fifty".