16420236 has 24 divisors (see below), whose sum is σ = 43787520. Its totient is φ = 4691472.

The previous prime is 16420223. The next prime is 16420253. The reversal of 16420236 is 63202461.

It is an unprimeable number.

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, 97656 + ... + 97823.

It is an arithmetic number, because the mean of its divisors is an integer number (1824480).

Almost surely, 2^16420236 is an apocalyptic number.

It is an amenable number.

16420236 is an abundant number, since it is smaller than the sum of its proper divisors (27367284).

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

16420236 is a wasteful number, since it uses less digits than its factorization.

16420236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195493 (or 195491 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 16420236 is about 4052.1890380386. The cubic root of 16420236 is about 254.1712734929.

Adding to 16420236 its reverse (63202461), we get a palindrome (79622697).

The spelling of 16420236 in words is "sixteen million, four hundred twenty thousand, two hundred thirty-six".