2206478 has 8 divisors (see below), whose sum is σ = 3331272. Its totient is φ = 1096056.

The previous prime is 2206471. The next prime is 2206483. The reversal of 2206478 is 8746022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2206478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3200 + ... + 3827.

It is an arithmetic number, because the mean of its divisors is an integer number (416409).

2^2206478 is an apocalyptic number.

2206478 is a deficient number, since it is larger than the sum of its proper divisors (1124794).

2206478 is a wasteful number, since it uses less digits than its factorization.

2206478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7186.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2206478 is about 1485.4218256105. The cubic root of 2206478 is about 130.1866746155.

The spelling of 2206478 in words is "two million, two hundred six thousand, four hundred seventy-eight".