2620280 has 32 divisors (see below), whose sum is σ = 6350400. Its totient is φ = 967296.

The previous prime is 2620279. The next prime is 2620283. The reversal of 2620280 is 820262.

2620280 = 140² + 141² + ... + 219².

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620283) 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, 2000 + ... + 3039.

It is an arithmetic number, because the mean of its divisors is an integer number (198450).

2^2620280 is an apocalyptic number.

2620280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2620280 is an abundant number, since it is smaller than the sum of its proper divisors (3730120).

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

2620280 is a wasteful number, since it uses less digits than its factorization.

2620280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063 (or 5059 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2620280 is about 1618.7278956020. The cubic root of 2620280 is about 137.8634790735.

The spelling of 2620280 in words is "two million, six hundred twenty thousand, two hundred eighty".