2270640 has 40 divisors (see below), whose sum is σ = 7039728. Its totient is φ = 605440.

The previous prime is 2270627. The next prime is 2270641. The reversal of 2270640 is 460722.

It is a happy number.

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 (2270641) 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, 4491 + ... + 4970.

2^2270640 is an apocalyptic number.

2270640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2270640 is an abundant number, since it is smaller than the sum of its proper divisors (4769088).

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

2270640 is a wasteful number, since it uses less digits than its factorization.

2270640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477 (or 9471 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 2270640 is about 1506.8642938234. The cubic root of 2270640 is about 131.4365329591.

The spelling of 2270640 in words is "two million, two hundred seventy thousand, six hundred forty".