2756430 has 80 divisors (see below), whose sum is σ = 7683984. Its totient is φ = 708480.

The previous prime is 2756423. The next prime is 2756437. The reversal of 2756430 is 346572.

It is a happy number.

2756430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2756423) and next prime (2756437).

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

It is a junction number, because it is equal to n+sod(n) for n = 2756394 and 2756403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2756437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 33169 + ... + 33251.

2^2756430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2756430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3841992).

2756430 is an abundant number, since it is smaller than the sum of its proper divisors (4927554).

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

2756430 is a wasteful number, since it uses less digits than its factorization.

2756430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 2756430 is about 1660.2499811775. The cubic root of 2756430 is about 140.2110761611.

The spelling of 2756430 in words is "two million, seven hundred fifty-six thousand, four hundred thirty".