436423020 has 96 divisors (see below), whose sum is σ = 1346478336. Its totient is φ = 104736000.

The previous prime is 436423019. The next prime is 436423021. The reversal of 436423020 is 20324634.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (436423019) and next prime (436423021).

It is not an unprimeable number, because it can be changed into a prime (436423021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63387 + ... + 69933.

It is an arithmetic number, because the mean of its divisors is an integer number (14025816).

Almost surely, 2^436423020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 436423020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673239168).

436423020 is an abundant number, since it is smaller than the sum of its proper divisors (910055316).

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

436423020 is a wasteful number, since it uses less digits than its factorization.

436423020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671 (or 6669 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 436423020 is about 20890.7400539091. The cubic root of 436423020 is about 758.5238081557.

Adding to 436423020 its reverse (20324634), we get a palindrome (456747654).

The spelling of 436423020 in words is "four hundred thirty-six million, four hundred twenty-three thousand, twenty".