220454446 has 8 divisors (see below), whose sum is σ = 331555320. Its totient is φ = 109936008.

The previous prime is 220454387. The next prime is 220454449. The reversal of 220454446 is 644454022.

It is a happy number.

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

It is a super-2 number, since 2×220454446² = 97200325522333832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220454449) 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, 144661 + ... + 146176.

It is an arithmetic number, because the mean of its divisors is an integer number (41444415).

Almost surely, 2^220454446 is an apocalyptic number.

220454446 is a deficient number, since it is larger than the sum of its proper divisors (111100874).

220454446 is a wasteful number, since it uses less digits than its factorization.

220454446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291218.

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 220454446 is about 14847.7084427194. The cubic root of 220454446 is about 604.0964551454.

It can be divided in two parts, 220454 and 446, that added together give a square (220900 = 470²).

The spelling of 220454446 in words is "two hundred twenty million, four hundred fifty-four thousand, four hundred forty-six".