16721074 has 8 divisors (see below), whose sum is σ = 25279488. Its totient is φ = 8294580.

The previous prime is 16721063. The next prime is 16721087. The reversal of 16721074 is 47012761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

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, 32662 + ... + 33169.

It is an arithmetic number, because the mean of its divisors is an integer number (3159936).

Almost surely, 2^16721074 is an apocalyptic number.

16721074 is a deficient number, since it is larger than the sum of its proper divisors (8558414).

16721074 is a wasteful number, since it uses less digits than its factorization.

16721074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65960.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 16721074 is about 4089.1409855861. The cubic root of 16721074 is about 255.7141279104.

The spelling of 16721074 in words is "sixteen million, seven hundred twenty-one thousand, seventy-four".