16421376 has 40 divisors (see below), whose sum is σ = 43751664. Its totient is φ = 5473280.

The previous prime is 16421357. The next prime is 16421387. The reversal of 16421376 is 67312461.

It is a nialpdrome in base 8 and base 16.

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, 3810 + ... + 6881.

Almost surely, 2^16421376 is an apocalyptic number.

16421376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16421376 is an abundant number, since it is smaller than the sum of its proper divisors (27330288).

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

16421376 is an equidigital number, since it uses as much as digits as its factorization.

16421376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712 (or 10696 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 16421376 is about 4052.3297003082. The cubic root of 16421376 is about 254.1771554333.

The spelling of 16421376 in words is "sixteen million, four hundred twenty-one thousand, three hundred seventy-six".