2138454 has 24 divisors (see below), whose sum is σ = 4776120. Its totient is φ = 709236.

The previous prime is 2138429. The next prime is 2138467. The reversal of 2138454 is 4548312.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10647 + ... + 10845.

It is an arithmetic number, because the mean of its divisors is an integer number (199005).

2^2138454 is an apocalyptic number.

2138454 is an abundant number, since it is smaller than the sum of its proper divisors (2637666).

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

2138454 is an equidigital number, since it uses as much as digits as its factorization.

2138454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 204 counting only the distinct ones).

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

The square root of 2138454 is about 1462.3453764416. The cubic root of 2138454 is about 128.8348345912.

The spelling of 2138454 in words is "two million, one hundred thirty-eight thousand, four hundred fifty-four".