2720550 has 48 divisors (see below), whose sum is σ = 7713792. Its totient is φ = 621600.

The previous prime is 2720513. The next prime is 2720551. The reversal of 2720550 is 550272.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (160704).

2^2720550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2720550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3856896).

2720550 is an abundant number, since it is smaller than the sum of its proper divisors (4993242).

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

2720550 is a wasteful number, since it uses less digits than its factorization.

2720550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613 (or 2608 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 2720550 is about 1649.4089850610. The cubic root of 2720550 is about 139.6000489870.

The spelling of 2720550 in words is "two million, seven hundred twenty thousand, five hundred fifty".