428331451 has 4 divisors (see below), whose sum is σ = 428544792. Its totient is φ = 428118112.

The previous prime is 428331403. The next prime is 428331481. The reversal of 428331451 is 154133824.

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

It is a cyclic number.

It is not a de Polignac number, because 428331451 - 2¹¹ = 428329403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428331481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103630 + ... + 107683.

It is an arithmetic number, because the mean of its divisors is an integer number (107136198).

Almost surely, 2^428331451 is an apocalyptic number.

428331451 is a deficient number, since it is larger than the sum of its proper divisors (213341).

428331451 is a wasteful number, since it uses less digits than its factorization.

428331451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213340.

The product of its digits is 11520, while the sum is 31.

The square root of 428331451 is about 20696.1699596809. The cubic root of 428331451 is about 753.8066911515.

The spelling of 428331451 in words is "four hundred twenty-eight million, three hundred thirty-one thousand, four hundred fifty-one".