2756389 has 16 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 2471040.

The previous prime is 2756381. The next prime is 2756401. The reversal of 2756389 is 9836572.

It is a cyclic number.

It is not a de Polignac number, because 2756389 - 2³ = 2756381 is a prime.

It is a Duffinian number.

Its product of digits (90720) is a multiple of the sum of its prime divisors (180).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2756381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34852 + ... + 34930.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

2^2756389 is an apocalyptic number.

It is an amenable number.

2756389 is a deficient number, since it is larger than the sum of its proper divisors (307931).

2756389 is a wasteful number, since it uses less digits than its factorization.

2756389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180.

The product of its digits is 90720, while the sum is 40.

The square root of 2756389 is about 1660.2376335935. The cubic root of 2756389 is about 140.2103809766.

The spelling of 2756389 in words is "two million, seven hundred fifty-six thousand, three hundred eighty-nine".