2138544 has 30 divisors (see below), whose sum is σ = 5985356. Its totient is φ = 712800.

The previous prime is 2138537. The next prime is 2138551. The reversal of 2138544 is 4458312.

It is an interprime number because it is at equal distance from previous prime (2138537) and next prime (2138551).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7282 + ... + 7569.

2^2138544 is an apocalyptic number.

2138544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2138544 is an abundant number, since it is smaller than the sum of its proper divisors (3846812).

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

2138544 is a wasteful number, since it uses less digits than its factorization.

2138544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14865 (or 14856 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 2138544 is about 1462.3761486020. The cubic root of 2138544 is about 128.8366419674.

The spelling of 2138544 in words is "two million, one hundred thirty-eight thousand, five hundred forty-four".