428803155 has 48 divisors (see below), whose sum is σ = 858540384. Its totient is φ = 195671040.

The previous prime is 428803139. The next prime is 428803183. The reversal of 428803155 is 551308824.

It is a happy number.

428803155 is a `hidden beast` number, since 428 + 80 + 3 + 155 = 666.

It is not a de Polignac number, because 428803155 - 2⁴ = 428803139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17064 + ... + 33893.

It is an arithmetic number, because the mean of its divisors is an integer number (17886258).

Almost surely, 2^428803155 is an apocalyptic number.

428803155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

428803155 is an abundant number, since it is smaller than the sum of its proper divisors (429737229).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428803155 is a wasteful number, since it uses less digits than its factorization.

428803155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50996 (or 50993 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 428803155 is about 20707.5627489089. The cubic root of 428803155 is about 754.0833018496.

The spelling of 428803155 in words is "four hundred twenty-eight million, eight hundred three thousand, one hundred fifty-five".