16138464 has 24 divisors (see below), whose sum is σ = 42363720. Its totient is φ = 5379456.

The previous prime is 16138403. The next prime is 16138477. The reversal of 16138464 is 46483161.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

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, 83959 + ... + 84150.

It is an arithmetic number, because the mean of its divisors is an integer number (1765155).

Almost surely, 2^16138464 is an apocalyptic number.

It is an amenable number.

16138464 is an abundant number, since it is smaller than the sum of its proper divisors (26225256).

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

16138464 is a wasteful number, since it uses less digits than its factorization.

16138464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168122 (or 168114 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 16138464 is about 4017.2707152991. The cubic root of 16138464 is about 252.7090136167.

The spelling of 16138464 in words is "sixteen million, one hundred thirty-eight thousand, four hundred sixty-four".