2229780 has 48 divisors (see below), whose sum is σ = 7136640. Its totient is φ = 509568.

The previous prime is 2229779. The next prime is 2229791. The reversal of 2229780 is 879222.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2235 + ... + 3074.

It is an arithmetic number, because the mean of its divisors is an integer number (148680).

2^2229780 is an apocalyptic number.

2229780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2229780 is an abundant number, since it is smaller than the sum of its proper divisors (4906860).

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

2229780 is a wasteful number, since it uses less digits than its factorization.

2229780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328 (or 5326 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2229780 is about 1493.2447890416. The cubic root of 2229780 is about 130.6433591405.

The spelling of 2229780 in words is "two million, two hundred twenty-nine thousand, seven hundred eighty".