2272780 has 24 divisors (see below), whose sum is σ = 5024880. Its totient is φ = 861120.

The previous prime is 2272771. The next prime is 2272811. The reversal of 2272780 is 872722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2611 + ... + 3370.

It is an arithmetic number, because the mean of its divisors is an integer number (209370).

2^2272780 is an apocalyptic number.

2272780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2272780 is an abundant number, since it is smaller than the sum of its proper divisors (2752100).

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

2272780 is a wasteful number, since it uses less digits than its factorization.

2272780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009 (or 6007 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 2272780 is about 1507.5742104454. The cubic root of 2272780 is about 131.4778114625.

The spelling of 2272780 in words is "two million, two hundred seventy-two thousand, seven hundred eighty".