2138487 has 8 divisors (see below), whose sum is σ = 3070704. Its totient is φ = 1315968.

The previous prime is 2138483. The next prime is 2138491. The reversal of 2138487 is 7848312.

It is an interprime number because it is at equal distance from previous prime (2138483) and next prime (2138491).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2138487 - 2² = 2138483 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 1 + 3³ + 8⁵ + 4 + 8⁷ + 7³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138483) 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, 27378 + ... + 27455.

It is an arithmetic number, because the mean of its divisors is an integer number (383838).

2^2138487 is an apocalyptic number.

2138487 is a deficient number, since it is larger than the sum of its proper divisors (932217).

2138487 is a wasteful number, since it uses less digits than its factorization.

2138487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54849.

The product of its digits is 10752, while the sum is 33.

The square root of 2138487 is about 1462.3566596422. The cubic root of 2138487 is about 128.8354973017.

The spelling of 2138487 in words is "two million, one hundred thirty-eight thousand, four hundred eighty-seven".