2250640 has 40 divisors (see below), whose sum is σ = 5981760. Its totient is φ = 771456.

The previous prime is 2250637. The next prime is 2250641. The reversal of 2250640 is 460522.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2250641) 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, 1450 + ... + 2569.

It is an arithmetic number, because the mean of its divisors is an integer number (149544).

2^2250640 is an apocalyptic number.

2250640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2250640 is an abundant number, since it is smaller than the sum of its proper divisors (3731120).

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

2250640 is a wasteful number, since it uses less digits than its factorization.

2250640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039 (or 4033 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2250640 is about 1500.2133181651. The cubic root of 2250640 is about 131.0494927881.

It can be divided in two parts, 2250 and 640, that multiplied together give a square (1440000 = 1200²).

The spelling of 2250640 in words is "two million, two hundred fifty thousand, six hundred forty".