2138734 has 16 divisors (see below), whose sum is σ = 3537072. Its totient is φ = 963648.

The previous prime is 2138713. The next prime is 2138737. The reversal of 2138734 is 4378312.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 3⁷ + 8⁵ + 7² + 3⁸ + 4² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138737) 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, 162 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (221067).

2^2138734 is an apocalyptic number.

2138734 is a deficient number, since it is larger than the sum of its proper divisors (1398338).

2138734 is a wasteful number, since it uses less digits than its factorization.

2138734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971.

The product of its digits is 4032, while the sum is 28.

The square root of 2138734 is about 1462.4411099255. The cubic root of 2138734 is about 128.8404573728.

The spelling of 2138734 in words is "two million, one hundred thirty-eight thousand, seven hundred thirty-four".