428588136 has 24 divisors (see below), whose sum is σ = 1160759730. Its totient is φ = 142862688.

The previous prime is 428588119. The next prime is 428588137. The reversal of 428588136 is 631885824.

It can be written as a sum of positive squares in only one way, i.e., 246176100 + 182412036 = 15690^2 + 13506^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 428588091 and 428588100.

It is not an unprimeable number, because it can be changed into a prime (428588137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2976235 + ... + 2976378.

Almost surely, 2^428588136 is an apocalyptic number.

It is an amenable number.

428588136 is an abundant number, since it is smaller than the sum of its proper divisors (732171594).

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

428588136 is a wasteful number, since it uses less digits than its factorization.

428588136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952625 (or 5952618 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 428588136 is about 20702.3702990745. The cubic root of 428588136 is about 753.9572382975.

The spelling of 428588136 in words is "four hundred twenty-eight million, five hundred eighty-eight thousand, one hundred thirty-six".