16401976 has 16 divisors (see below), whose sum is σ = 31746240. Its totient is φ = 7936320.

The previous prime is 16401943. The next prime is 16401977. The reversal of 16401976 is 67910461.

16401976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32821 + ... + 33316.

It is an arithmetic number, because the mean of its divisors is an integer number (1984140).

Almost surely, 2^16401976 is an apocalyptic number.

It is an amenable number.

16401976 is a deficient number, since it is larger than the sum of its proper divisors (15344264).

16401976 is a wasteful number, since it uses less digits than its factorization.

16401976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66174 (or 66170 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 16401976 is about 4049.9353081253. The cubic root of 16401976 is about 254.0770221291.

The spelling of 16401976 in words is "sixteen million, four hundred one thousand, nine hundred seventy-six".