2134404 has 24 divisors (see below), whose sum is σ = 5533920. Its totient is φ = 711432.

The previous prime is 2134399. The next prime is 2134409. The reversal of 2134404 is 4044312.

It is an interprime number because it is at equal distance from previous prime (2134399) and next prime (2134409).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2134409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9774 + ... + 9989.

It is an arithmetic number, because the mean of its divisors is an integer number (230580).

2^2134404 is an apocalyptic number.

It is an amenable number.

2134404 is an abundant number, since it is smaller than the sum of its proper divisors (3399516).

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

2134404 is a wasteful number, since it uses less digits than its factorization.

2134404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19776 (or 19768 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2134404 is about 1460.9599583835. The cubic root of 2134404 is about 128.7534501228.

Adding to 2134404 its reverse (4044312), we get a palindrome (6178716).

It can be divided in two parts, 213440 and 4, that added together give a square (213444 = 462²).

The spelling of 2134404 in words is "two million, one hundred thirty-four thousand, four hundred four".