21450002 has 8 divisors (see below), whose sum is σ = 36771456. Its totient is φ = 9192852.

The previous prime is 21449959. The next prime is 21450019. The reversal of 21450002 is 20005412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 1532143 = 21450002 / (2 + 1 + 4 + 5 + 0 + 0 + 0 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766058 + ... + 766085.

It is an arithmetic number, because the mean of its divisors is an integer number (4596432).

Almost surely, 2^21450002 is an apocalyptic number.

21450002 is a deficient number, since it is larger than the sum of its proper divisors (15321454).

21450002 is a wasteful number, since it uses less digits than its factorization.

21450002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532152.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 21450002 is about 4631.4146866805. The cubic root of 21450002 is about 277.8491754721.

Adding to 21450002 its reverse (20005412), we get a palindrome (41455414).

The spelling of 21450002 in words is "twenty-one million, four hundred fifty thousand, two".