2801385 has 20 divisors (see below), whose sum is σ = 5022468. Its totient is φ = 1493856.

The previous prime is 2801369. The next prime is 2801401. The reversal of 2801385 is 5831082.

It is a happy number.

2801385 is a `hidden beast` number, since 280 + 1 + 385 = 666.

It is an interprime number because it is at equal distance from previous prime (2801369) and next prime (2801401).

It can be written as a sum of positive squares in 2 ways, for example, as 1411344 + 1390041 = 1188^2 + 1179^2 .

It is not a de Polignac number, because 2801385 - 2⁴ = 2801369 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3054 + ... + 3863.

2^2801385 is an apocalyptic number.

It is an amenable number.

2801385 is a deficient number, since it is larger than the sum of its proper divisors (2221083).

2801385 is an equidigital number, since it uses as much as digits as its factorization.

2801385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6934 (or 6925 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2801385 is about 1673.7338498101. The cubic root of 2801385 is about 140.9692101172.

The spelling of 2801385 in words is "two million, eight hundred one thousand, three hundred eighty-five".