428143550 has 24 divisors (see below), whose sum is σ = 797028600. Its totient is φ = 171110880.

The previous prime is 428143537. The next prime is 428143571. The reversal of 428143550 is 55341824.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 70016 + ... + 75884.

It is an arithmetic number, because the mean of its divisors is an integer number (33209525).

Almost surely, 2^428143550 is an apocalyptic number.

428143550 is a deficient number, since it is larger than the sum of its proper divisors (368885050).

428143550 is a wasteful number, since it uses less digits than its factorization.

428143550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340 (or 7335 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 428143550 is about 20691.6299502963. The cubic root of 428143550 is about 753.6964480617.

It can be divided in two parts, 42814 and 3550, that added together give a palindrome (46364).

The spelling of 428143550 in words is "four hundred twenty-eight million, one hundred forty-three thousand, five hundred fifty".