16421374 has 16 divisors (see below), whose sum is σ = 25019280. Its totient is φ = 8082880.

The previous prime is 16421357. The next prime is 16421387. The reversal of 16421374 is 47312461.

It is a congruent number.

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, 60912 + ... + 61180.

It is an arithmetic number, because the mean of its divisors is an integer number (1563705).

Almost surely, 2^16421374 is an apocalyptic number.

16421374 is a deficient number, since it is larger than the sum of its proper divisors (8597906).

16421374 is a wasteful number, since it uses less digits than its factorization.

16421374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635.

The product of its digits is 4032, while the sum is 28.

The square root of 16421374 is about 4052.3294535366. The cubic root of 16421374 is about 254.1771451143.

The spelling of 16421374 in words is "sixteen million, four hundred twenty-one thousand, three hundred seventy-four".