16421622 has 16 divisors (see below), whose sum is σ = 37535232. Its totient is φ = 4691880.

The previous prime is 16421597. The next prime is 16421623. The reversal of 16421622 is 22612461.

It is a super-2 number, since 2×16421622² = 539339338221768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16421592 and 16421601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195454 + ... + 195537.

It is an arithmetic number, because the mean of its divisors is an integer number (2345952).

Almost surely, 2^16421622 is an apocalyptic number.

16421622 is an abundant number, since it is smaller than the sum of its proper divisors (21113610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16421622 is a wasteful number, since it uses less digits than its factorization.

16421622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391003.

The product of its digits is 1152, while the sum is 24.

The square root of 16421622 is about 4052.3600531049. The cubic root of 16421622 is about 254.1784246584.

The spelling of 16421622 in words is "sixteen million, four hundred twenty-one thousand, six hundred twenty-two".