428242536 has 48 divisors (see below), whose sum is σ = 1199823300. Its totient is φ = 137824512.

The previous prime is 428242523. The next prime is 428242553. The reversal of 428242536 is 635242824.

428242536 is a `hidden beast` number, since 4 + 2 + 82 + 42 + 536 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 428241636 + 900 = 20694^2 + 30^2 .

It is a super-2 number, since 2×428242536² = 366783339279422592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 428242536.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100461 + ... + 104636.

Almost surely, 2^428242536 is an apocalyptic number.

It is an amenable number.

428242536 is an abundant number, since it is smaller than the sum of its proper divisors (771580764).

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

428242536 is a wasteful number, since it uses less digits than its factorization.

428242536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205138 (or 205131 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 428242536 is about 20694.0217454220. The cubic root of 428242536 is about 753.7545279960.

The spelling of 428242536 in words is "four hundred twenty-eight million, two hundred forty-two thousand, five hundred thirty-six".