428764361 has 8 divisors (see below), whose sum is σ = 456341544. Its totient is φ = 401448960.

The previous prime is 428764351. The next prime is 428764381. The reversal of 428764361 is 163467824.

It can be written as a sum of positive squares in 4 ways, for example, as 84290761 + 344473600 = 9181^2 + 18560^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428764361 is a prime.

It is a super-3 number, since 3×428764361³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (428764351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62060 + ... + 68621.

It is an arithmetic number, because the mean of its divisors is an integer number (57042693).

Almost surely, 2^428764361 is an apocalyptic number.

It is an amenable number.

428764361 is a deficient number, since it is larger than the sum of its proper divisors (27577183).

428764361 is a wasteful number, since it uses less digits than its factorization.

428764361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130891.

The product of its digits is 193536, while the sum is 41.

The square root of 428764361 is about 20706.6260168092. The cubic root of 428764361 is about 754.0605604203.

The spelling of 428764361 in words is "four hundred twenty-eight million, seven hundred sixty-four thousand, three hundred sixty-one".