16440038 has 8 divisors (see below), whose sum is σ = 24998088. Its totient is φ = 8107344.

The previous prime is 16440029. The next prime is 16440041. The reversal of 16440038 is 83004461.

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

It is a junction number, because it is equal to n+sod(n) for n = 16439989 and 16440016.

It is a congruent number.

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, 56156 + ... + 56447.

It is an arithmetic number, because the mean of its divisors is an integer number (3124761).

Almost surely, 2^16440038 is an apocalyptic number.

16440038 is a deficient number, since it is larger than the sum of its proper divisors (8558050).

16440038 is a wasteful number, since it uses less digits than its factorization.

16440038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112678.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 16440038 is about 4054.6316725444. The cubic root of 16440038 is about 254.2734051490.

Adding to 16440038 its reverse (83004461), we get a palindrome (99444499).

The spelling of 16440038 in words is "sixteen million, four hundred forty thousand, thirty-eight".