2769156 has 72 divisors (see below), whose sum is σ = 7740824. Its totient is φ = 829440.

The previous prime is 2769149. The next prime is 2769163. The reversal of 2769156 is 6519672.

It is an interprime number because it is at equal distance from previous prime (2769149) and next prime (2769163).

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 2722500 = 216^2 + 1650^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2769156.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28500 + ... + 28596.

2^2769156 is an apocalyptic number.

2769156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2769156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3870412).

2769156 is an abundant number, since it is smaller than the sum of its proper divisors (4971668).

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

2769156 is a wasteful number, since it uses less digits than its factorization.

2769156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 176 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 2769156 is about 1664.0781231661. The cubic root of 2769156 is about 140.4265223715.

The spelling of 2769156 in words is "two million, seven hundred sixty-nine thousand, one hundred fifty-six".