220427029 has 4 divisors (see below), whose sum is σ = 225803340. Its totient is φ = 215050720.

The previous prime is 220427021. The next prime is 220427033. The reversal of 220427029 is 920724022.

220427029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76475025 + 143952004 = 8745^2 + 11998^2 .

It is a cyclic number.

It is not a de Polignac number, because 220427029 - 2³ = 220427021 is a prime.

It is a super-4 number, since 4×220427029⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220426988 and 220427006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220427021) 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, 2688094 + ... + 2688175.

It is an arithmetic number, because the mean of its divisors is an integer number (56450835).

Almost surely, 2^220427029 is an apocalyptic number.

It is an amenable number.

220427029 is a deficient number, since it is larger than the sum of its proper divisors (5376311).

220427029 is an equidigital number, since it uses as much as digits as its factorization.

220427029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376310.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 220427029 is about 14846.7851402248. The cubic root of 220427029 is about 604.0714111216.

The spelling of 220427029 in words is "two hundred twenty million, four hundred twenty-seven thousand, twenty-nine".