2188454 has 8 divisors (see below), whose sum is σ = 3301560. Its totient is φ = 1087936.

The previous prime is 2188451. The next prime is 2188463. The reversal of 2188454 is 4548812.

It is a happy number.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2188454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188451) 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, 2699 + ... + 3414.

It is an arithmetic number, because the mean of its divisors is an integer number (412695).

2^2188454 is an apocalyptic number.

2188454 is a deficient number, since it is larger than the sum of its proper divisors (1113106).

2188454 is a wasteful number, since it uses less digits than its factorization.

2188454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6294.

The product of its digits is 10240, while the sum is 32.

The square root of 2188454 is about 1479.3424214833. The cubic root of 2188454 is about 129.8312208108.

The spelling of 2188454 in words is "two million, one hundred eighty-eight thousand, four hundred fifty-four".