16421006 has 8 divisors (see below), whose sum is σ = 28150320. Its totient is φ = 7037568.

The previous prime is 16420961. The next prime is 16421023. The reversal of 16421006 is 60012461.

It is a happy number.

16421006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586451 + ... + 586478.

It is an arithmetic number, because the mean of its divisors is an integer number (3518790).

Almost surely, 2^16421006 is an apocalyptic number.

16421006 is a deficient number, since it is larger than the sum of its proper divisors (11729314).

16421006 is a wasteful number, since it uses less digits than its factorization.

16421006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172938.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 16421006 is about 4052.2840472997. The cubic root of 16421006 is about 254.1752464123.

Adding to 16421006 its reverse (60012461), we get a palindrome (76433467).

The spelling of 16421006 in words is "sixteen million, four hundred twenty-one thousand, six".