163435420 has 24 divisors (see below), whose sum is σ = 343476000. Its totient is φ = 65324352.

The previous prime is 163435381. The next prime is 163435421. The reversal of 163435420 is 24534361.

It is a super-2 number, since 2×163435420² = 53422273021152800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163435421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35406 + ... + 39754.

It is an arithmetic number, because the mean of its divisors is an integer number (14311500).

Almost surely, 2^163435420 is an apocalyptic number.

163435420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163435420 is an abundant number, since it is smaller than the sum of its proper divisors (180040580).

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

163435420 is a wasteful number, since it uses less digits than its factorization.

163435420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6237 (or 6235 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 163435420 is about 12784.1863253005. The cubic root of 163435420 is about 546.7415266972.

Adding to 163435420 its reverse (24534361), we get a palindrome (187969781).

The spelling of 163435420 in words is "one hundred sixty-three million, four hundred thirty-five thousand, four hundred twenty".