2750000 has 70 divisors (see below), whose sum is σ = 7265532. Its totient is φ = 1000000.

The previous prime is 2749991. The next prime is 2750021. The reversal of 2750000 is 572.

2750000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 249995 + ... + 250005.

2^2750000 is an apocalyptic number.

2750000 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 2750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3632766).

2750000 is an abundant number, since it is smaller than the sum of its proper divisors (4515532).

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

2750000 is an frugal number, since it uses more digits than its factorization.

2750000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 14.

The square root of 2750000 is about 1658.3123951777. The cubic root of 2750000 is about 140.1019665328.

Adding to 2750000 its reverse (572), we get a palindrome (2750572).

The spelling of 2750000 in words is "two million, seven hundred fifty thousand".