2749680 has 160 divisors (see below), whose sum is σ = 10118400. Its totient is φ = 684288.

The previous prime is 2749679. The next prime is 2749687. The reversal of 2749680 is 869472.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41007 + ... + 41073.

It is an arithmetic number, because the mean of its divisors is an integer number (63240).

2^2749680 is an apocalyptic number.

2749680 is a gapful number since it is divisible by the number (20) 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 2749680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5059200).

2749680 is an abundant number, since it is smaller than the sum of its proper divisors (7368720).

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

2749680 is a wasteful number, since it uses less digits than its factorization.

2749680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2749680 is about 1658.2159087405. The cubic root of 2749680 is about 140.0965320639.

The spelling of 2749680 in words is "two million, seven hundred forty-nine thousand, six hundred eighty".