214138404 has 36 divisors (see below), whose sum is σ = 561344784. Its totient is φ = 71379144.

The previous prime is 214138403. The next prime is 214138429. The reversal of 214138404 is 404831412.

214138404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (214138403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109182 + ... + 111125.

Almost surely, 2^214138404 is an apocalyptic number.

It is an amenable number.

214138404 is an abundant number, since it is smaller than the sum of its proper divisors (347206380).

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

214138404 is a wasteful number, since it uses less digits than its factorization.

214138404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220326 (or 220312 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 214138404 is about 14633.4686250390. The cubic root of 214138404 is about 598.2713242501.

Adding to 214138404 its reverse (404831412), we get a palindrome (618969816).

The spelling of 214138404 in words is "two hundred fourteen million, one hundred thirty-eight thousand, four hundred four".