2148787 has 4 divisors (see below), whose sum is σ = 2174760. Its totient is φ = 2122816.

The previous prime is 2148781. The next prime is 2148791. The reversal of 2148787 is 7878412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2148787 - 2⁷ = 2148659 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 4⁷ + 8⁵ + 7² + 8⁷ + 7⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2148781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12862 + ... + 13027.

It is an arithmetic number, because the mean of its divisors is an integer number (543690).

2^2148787 is an apocalyptic number.

2148787 is a deficient number, since it is larger than the sum of its proper divisors (25973).

2148787 is an equidigital number, since it uses as much as digits as its factorization.

2148787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25972.

The product of its digits is 25088, while the sum is 37.

The square root of 2148787 is about 1465.8741419372. The cubic root of 2148787 is about 129.0420110350.

The spelling of 2148787 in words is "two million, one hundred forty-eight thousand, seven hundred eighty-seven".