220730449 has 9 divisors (see below), whose sum is σ = 224677033. Its totient is φ = 216852772.

The previous prime is 220730443. The next prime is 220730459. The reversal of 220730449 is 944037022.

The square root of 220730449 is 14857.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 220730449 - 2¹⁷ = 220599377 is a prime.

It is a super-2 number, since 2×220730449² = 97443862231483202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220730449.

It is not an unprimeable number, because it can be changed into a prime (220730443) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1233042 + ... + 1233220.

Almost surely, 2^220730449 is an apocalyptic number.

220730449 is the 14857-th square number.

220730449 is the 7429-th centered octagonal number.

It is an amenable number.

220730449 is a deficient number, since it is larger than the sum of its proper divisors (3946584).

220730449 is an frugal number, since it uses more digits than its factorization.

220730449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The cubic root of 220730449 is about 604.3484541469.

The spelling of 220730449 in words is "two hundred twenty million, seven hundred thirty thousand, four hundred forty-nine".