2238780 has 24 divisors (see below), whose sum is σ = 6268752. Its totient is φ = 596992.

The previous prime is 2238779. The next prime is 2238787. The reversal of 2238780 is 878322.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238787) 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, 18597 + ... + 18716.

It is an arithmetic number, because the mean of its divisors is an integer number (261198).

2^2238780 is an apocalyptic number.

2238780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2238780 is an abundant number, since it is smaller than the sum of its proper divisors (4029972).

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

2238780 is a wasteful number, since it uses less digits than its factorization.

2238780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37325 (or 37323 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 2238780 is about 1496.2553258051. The cubic root of 2238780 is about 130.8188939217.

The spelling of 2238780 in words is "two million, two hundred thirty-eight thousand, seven hundred eighty".