2219940 has 48 divisors (see below), whose sum is σ = 6908160. Its totient is φ = 591840.

The previous prime is 2219939. The next prime is 2219947. The reversal of 2219940 is 499122.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2219947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1516 + ... + 2595.

It is an arithmetic number, because the mean of its divisors is an integer number (143920).

2^2219940 is an apocalyptic number.

2219940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2219940 is an abundant number, since it is smaller than the sum of its proper divisors (4688220).

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

2219940 is a wasteful number, since it uses less digits than its factorization.

2219940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129 (or 4121 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 2219940 is about 1489.9463077574. The cubic root of 2219940 is about 130.4508997475.

The spelling of 2219940 in words is "two million, two hundred nineteen thousand, nine hundred forty".