16043420 has 24 divisors (see below), whose sum is σ = 35157024. Its totient is φ = 6138176.

The previous prime is 16043389. The next prime is 16043431. The reversal of 16043420 is 2434061.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 16043392 and 16043401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16979 + ... + 17898.

It is an arithmetic number, because the mean of its divisors is an integer number (1464876).

Almost surely, 2^16043420 is an apocalyptic number.

16043420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16043420 is an abundant number, since it is smaller than the sum of its proper divisors (19113604).

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

16043420 is a wasteful number, since it uses less digits than its factorization.

16043420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34909 (or 34907 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 16043420 is about 4005.4238227683. The cubic root of 16043420 is about 252.2119448145.

Adding to 16043420 its reverse (2434061), we get a palindrome (18477481).

The spelling of 16043420 in words is "sixteen million, forty-three thousand, four hundred twenty".