428361844 has 24 divisors (see below), whose sum is σ = 807464448. Its totient is φ = 198258720.

The previous prime is 428361833. The next prime is 428361853. The reversal of 428361844 is 448163824.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 428361797 and 428361806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72247 + ... + 77950.

It is an arithmetic number, because the mean of its divisors is an integer number (33644352).

Almost surely, 2^428361844 is an apocalyptic number.

It is an amenable number.

428361844 is a deficient number, since it is larger than the sum of its proper divisors (379102604).

428361844 is a wasteful number, since it uses less digits than its factorization.

428361844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150255 (or 150253 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 428361844 is about 20696.9042129493. The cubic root of 428361844 is about 753.8245199496.

The spelling of 428361844 in words is "four hundred twenty-eight million, three hundred sixty-one thousand, eight hundred forty-four".