16400633 has 8 divisors (see below), whose sum is σ = 17160000. Its totient is φ = 15645168.

The previous prime is 16400621. The next prime is 16400641. The reversal of 16400633 is 33600461.

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

It is a cyclic number.

It is not a de Polignac number, because 16400633 - 2¹⁰ = 16399609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16400599 and 16400608.

It is not an unprimeable number, because it can be changed into a prime (16400693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10763 + ... + 12191.

It is an arithmetic number, because the mean of its divisors is an integer number (2145000).

Almost surely, 2^16400633 is an apocalyptic number.

It is an amenable number.

16400633 is a deficient number, since it is larger than the sum of its proper divisors (759367).

16400633 is a wasteful number, since it uses less digits than its factorization.

16400633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 16400633 is about 4049.7694996135. The cubic root of 16400633 is about 254.0700872989.

The spelling of 16400633 in words is "sixteen million, four hundred thousand, six hundred thirty-three".