2218750 has 28 divisors (see below), whose sum is σ = 4218696. Its totient is φ = 875000.

The previous prime is 2218709. The next prime is 2218751. The reversal of 2218750 is 578122.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218751) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 31215 + ... + 31285.

2^2218750 is an apocalyptic number.

2218750 is a deficient number, since it is larger than the sum of its proper divisors (1999946).

2218750 is an frugal number, since it uses more digits than its factorization.

2218750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2218750 is about 1489.5469109766. The cubic root of 2218750 is about 130.4275861569.

The spelling of 2218750 in words is "two million, two hundred eighteen thousand, seven hundred fifty".