16401884 has 12 divisors (see below), whose sum is σ = 28967400. Its totient is φ = 8125488.

The previous prime is 16401881. The next prime is 16401887. The reversal of 16401884 is 48810461.

It is an interprime number because it is at equal distance from previous prime (16401881) and next prime (16401887).

It is a self number, because there is not a number n which added to its sum of digits gives 16401884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401881) 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, 18374 + ... + 19245.

It is an arithmetic number, because the mean of its divisors is an integer number (2413950).

Almost surely, 2^16401884 is an apocalyptic number.

It is an amenable number.

16401884 is a deficient number, since it is larger than the sum of its proper divisors (12565516).

16401884 is a wasteful number, since it uses less digits than its factorization.

16401884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37732 (or 37730 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 16401884 is about 4049.9239499033. The cubic root of 16401884 is about 254.0765470821.

The spelling of 16401884 in words is "sixteen million, four hundred one thousand, eight hundred eighty-four".