16421360 has 20 divisors (see below), whose sum is σ = 38179848. Its totient is φ = 6568512.

The previous prime is 16421357. The next prime is 16421387. The reversal of 16421360 is 6312461.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×16421360² = 539322128499200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102554 + ... + 102713.

Almost surely, 2^16421360 is an apocalyptic number.

16421360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16421360 is an abundant number, since it is smaller than the sum of its proper divisors (21758488).

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

16421360 is a wasteful number, since it uses less digits than its factorization.

16421360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205280 (or 205274 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 16421360 is about 4052.3277261347. The cubic root of 16421360 is about 254.1770728816.

The spelling of 16421360 in words is "sixteen million, four hundred twenty-one thousand, three hundred sixty".