16421146 has 8 divisors (see below), whose sum is σ = 28150560. Its totient is φ = 7037628.

The previous prime is 16421129. The next prime is 16421147. The reversal of 16421146 is 64112461.

16421146 is digitally balanced in base 2 and base 8, because in such bases 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.

16421146 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 16421146.

It is not an unprimeable number, because it can be changed into a prime (16421147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586456 + ... + 586483.

It is an arithmetic number, because the mean of its divisors is an integer number (3518820).

Almost surely, 2^16421146 is an apocalyptic number.

16421146 is a deficient number, since it is larger than the sum of its proper divisors (11729414).

16421146 is a wasteful number, since it uses less digits than its factorization.

16421146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172948.

The product of its digits is 1152, while the sum is 25.

The square root of 16421146 is about 4052.3013214715. The cubic root of 16421146 is about 254.1759687479.

The spelling of 16421146 in words is "sixteen million, four hundred twenty-one thousand, one hundred forty-six".