2220454 has 16 divisors (see below), whose sum is σ = 3559680. Its totient is φ = 1035720.

The previous prime is 2220431. The next prime is 2220457. The reversal of 2220454 is 4540222.

It is a super-2 number, since 2×2220454² = 9860831932232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220457) 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, 2287 + ... + 3109.

It is an arithmetic number, because the mean of its divisors is an integer number (222480).

2^2220454 is an apocalyptic number.

2220454 is a deficient number, since it is larger than the sum of its proper divisors (1339226).

2220454 is a wasteful number, since it uses less digits than its factorization.

2220454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2220454 is about 1490.1187872113. The cubic root of 2220454 is about 130.4609670749.

Adding to 2220454 its reverse (4540222), we get a palindrome (6760676).

The spelling of 2220454 in words is "two million, two hundred twenty thousand, four hundred fifty-four".