16404036 has 48 divisors (see below), whose sum is σ = 42083328. Its totient is φ = 4932000.

The previous prime is 16404007. The next prime is 16404041. The reversal of 16404036 is 63040461.

16404036 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16403997 and 16404015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19521 + ... + 20343.

It is an arithmetic number, because the mean of its divisors is an integer number (876736).

Almost surely, 2^16404036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16404036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21041664).

16404036 is an abundant number, since it is smaller than the sum of its proper divisors (25679292).

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

16404036 is a wasteful number, since it uses less digits than its factorization.

16404036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 16404036 is about 4050.1896251904. The cubic root of 16404036 is about 254.0876585865.

Adding to 16404036 its reverse (63040461), we get a palindrome (79444497).

The spelling of 16404036 in words is "sixteen million, four hundred four thousand, thirty-six".