428541247 has 8 divisors (see below), whose sum is σ = 433738592. Its totient is φ = 423360000.

The previous prime is 428541233. The next prime is 428541251. The reversal of 428541247 is 742145824.

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-428541247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428541227) 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, 54622 + ... + 61972.

It is an arithmetic number, because the mean of its divisors is an integer number (54217324).

Almost surely, 2^428541247 is an apocalyptic number.

428541247 is a deficient number, since it is larger than the sum of its proper divisors (5197345).

428541247 is an equidigital number, since it uses as much as digits as its factorization.

428541247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8049.

The product of its digits is 71680, while the sum is 37.

The square root of 428541247 is about 20701.2378132323. The cubic root of 428541247 is about 753.9297421326.

The spelling of 428541247 in words is "four hundred twenty-eight million, five hundred forty-one thousand, two hundred forty-seven".