428817446 has 4 divisors (see below), whose sum is σ = 643226172. Its totient is φ = 214408722.

The previous prime is 428817437. The next prime is 428817449. The reversal of 428817446 is 644718824.

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

It is a junction number, because it is equal to n+sod(n) for n = 428817397 and 428817406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428817449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107204360 + ... + 107204363.

It is an arithmetic number, because the mean of its divisors is an integer number (160806543).

Almost surely, 2^428817446 is an apocalyptic number.

428817446 is a deficient number, since it is larger than the sum of its proper divisors (214408726).

428817446 is a wasteful number, since it uses less digits than its factorization.

428817446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214408725.

The product of its digits is 344064, while the sum is 44.

The square root of 428817446 is about 20707.9078132003. The cubic root of 428817446 is about 754.0916790304.

The spelling of 428817446 in words is "four hundred twenty-eight million, eight hundred seventeen thousand, four hundred forty-six".