2649880 has 32 divisors (see below), whose sum is σ = 6157440. Its totient is φ = 1025280.

The previous prime is 2649877. The next prime is 2649887. The reversal of 2649880 is 889462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172 + ... + 2308.

It is an arithmetic number, because the mean of its divisors is an integer number (192420).

2^2649880 is an apocalyptic number.

2649880 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 2649880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3078720).

2649880 is an abundant number, since it is smaller than the sum of its proper divisors (3507560).

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

2649880 is a wasteful number, since it uses less digits than its factorization.

2649880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 2649880 is about 1627.8452014857. The cubic root of 2649880 is about 138.3806615367.

The spelling of 2649880 in words is "two million, six hundred forty-nine thousand, eight hundred eighty".