428503886 has 32 divisors (see below), whose sum is σ = 677154816. Its totient is φ = 203112000.

The previous prime is 428503879. The next prime is 428503891. The reversal of 428503886 is 688305824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1368866 + ... + 1369178.

It is an arithmetic number, because the mean of its divisors is an integer number (21161088).

Almost surely, 2^428503886 is an apocalyptic number.

428503886 is a deficient number, since it is larger than the sum of its proper divisors (248650930).

428503886 is a wasteful number, since it uses less digits than its factorization.

428503886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 428503886 is about 20700.3354079107. The cubic root of 428503886 is about 753.9078318436.

The spelling of 428503886 in words is "four hundred twenty-eight million, five hundred three thousand, eight hundred eighty-six".