2148639 has 8 divisors (see below), whose sum is σ = 2963760. Its totient is φ = 1382976.

The previous prime is 2148631. The next prime is 2148649. The reversal of 2148639 is 9368412.

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

It is not a de Polignac number, because 2148639 - 2³ = 2148631 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 4⁶ + 8⁷ + 6⁶ + 3 + 9³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148631) 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, 12262 + ... + 12435.

It is an arithmetic number, because the mean of its divisors is an integer number (370470).

2^2148639 is an apocalyptic number.

2148639 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2148639 is a deficient number, since it is larger than the sum of its proper divisors (815121).

2148639 is a wasteful number, since it uses less digits than its factorization.

2148639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24729.

The product of its digits is 10368, while the sum is 33.

The square root of 2148639 is about 1465.8236592442. The cubic root of 2148639 is about 129.0390483315.

The spelling of 2148639 in words is "two million, one hundred forty-eight thousand, six hundred thirty-nine".