2611278 has 36 divisors (see below), whose sum is σ = 5904600. Its totient is φ = 866052.

The previous prime is 2611277. The next prime is 2611291. The reversal of 2611278 is 8721162.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611277) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13023 + ... + 13221.

2^2611278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2611278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2952300).

2611278 is an abundant number, since it is smaller than the sum of its proper divisors (3293322).

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

2611278 is an frugal number, since it uses more digits than its factorization.

2611278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 204 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 2611278 is about 1615.9449248041. The cubic root of 2611278 is about 137.7054207785.

The spelling of 2611278 in words is "two million, six hundred eleven thousand, two hundred seventy-eight".