428034881 has 2 divisors, whose sum is σ = 428034882. Its totient is φ = 428034880.

The previous prime is 428034839. The next prime is 428034947. The reversal of 428034881 is 188430824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427827856 + 207025 = 20684^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 428034881 - 2¹⁴ = 428018497 is a prime.

It is a super-2 number, since 2×428034881² = 366427718705368322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428034181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214017440 + 214017441.

It is an arithmetic number, because the mean of its divisors is an integer number (214017441).

Almost surely, 2^428034881 is an apocalyptic number.

It is an amenable number.

428034881 is a deficient number, since it is larger than the sum of its proper divisors (1).

428034881 is an equidigital number, since it uses as much as digits as its factorization.

428034881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 428034881 is about 20689.0038667888. The cubic root of 428034881 is about 753.6326763277.

The spelling of 428034881 in words is "four hundred twenty-eight million, thirty-four thousand, eight hundred eighty-one".