428723051 has 8 divisors (see below), whose sum is σ = 458108640. Its totient is φ = 399800448.

The previous prime is 428723047. The next prime is 428723069. The reversal of 428723051 is 150327824.

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

It is a cyclic number.

It is not a de Polignac number, because 428723051 - 2² = 428723047 is a prime.

It is a super-3 number, since 3×428723051³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428722999 and 428723017.

It is not an unprimeable number, because it can be changed into a prime (428723021) 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 7 ways as a sum of consecutive naturals, for example, 113831 + ... + 117536.

It is an arithmetic number, because the mean of its divisors is an integer number (57263580).

Almost surely, 2^428723051 is an apocalyptic number.

428723051 is a deficient number, since it is larger than the sum of its proper divisors (29385589).

428723051 is a wasteful number, since it uses less digits than its factorization.

428723051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231493.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 428723051 is about 20705.6284859939. The cubic root of 428723051 is about 754.0363425787.

The spelling of 428723051 in words is "four hundred twenty-eight million, seven hundred twenty-three thousand, fifty-one".