16420434 has 16 divisors (see below), whose sum is σ = 33149088. Its totient is φ = 5422112.

The previous prime is 16420433. The next prime is 16420441. The reversal of 16420434 is 43402461.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16420433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12147 + ... + 13430.

It is an arithmetic number, because the mean of its divisors is an integer number (2071818).

Almost surely, 2^16420434 is an apocalyptic number.

16420434 is an abundant number, since it is smaller than the sum of its proper divisors (16728654).

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

16420434 is a wasteful number, since it uses less digits than its factorization.

16420434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25689.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 16420434 is about 4052.2134692042. The cubic root of 16420434 is about 254.1722951126.

Adding to 16420434 its reverse (43402461), we get a palindrome (59822895).

The spelling of 16420434 in words is "sixteen million, four hundred twenty thousand, four hundred thirty-four".