16421612 has 24 divisors (see below), whose sum is σ = 29647296. Its totient is φ = 7954688.

The previous prime is 16421597. The next prime is 16421623. The reversal of 16421612 is 21612461.

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, 20858 + ... + 21630.

It is an arithmetic number, because the mean of its divisors is an integer number (1235304).

Almost surely, 2^16421612 is an apocalyptic number.

It is an amenable number.

16421612 is a deficient number, since it is larger than the sum of its proper divisors (13225684).

16421612 is a wasteful number, since it uses less digits than its factorization.

16421612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937 (or 935 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 16421612 is about 4052.3588192558. The cubic root of 16421612 is about 254.1783730641.

The spelling of 16421612 in words is "sixteen million, four hundred twenty-one thousand, six hundred twelve".