428543436 has 24 divisors (see below), whose sum is σ = 1006561024. Its totient is φ = 141901200.

The previous prime is 428543431. The next prime is 428543441. The reversal of 428543436 is 634345824.

It is an interprime number because it is at equal distance from previous prime (428543431) and next prime (428543441).

It is a super-3 number, since 3×428543436³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 428543394 and 428543403.

It is not an unprimeable number, because it can be changed into a prime (428543431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116440 + ... + 120063.

Almost surely, 2^428543436 is an apocalyptic number.

It is an amenable number.

428543436 is an abundant number, since it is smaller than the sum of its proper divisors (578017588).

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

428543436 is a wasteful number, since it uses less digits than its factorization.

428543436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236661 (or 236659 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The square root of 428543436 is about 20701.2906843994. The cubic root of 428543436 is about 753.9310258281.

The spelling of 428543436 in words is "four hundred twenty-eight million, five hundred forty-three thousand, four hundred thirty-six".