16420415 has 16 divisors (see below), whose sum is σ = 22079520. Its totient is φ = 11617920.

The previous prime is 16420403. The next prime is 16420423. The reversal of 16420415 is 51402461.

It is not a de Polignac number, because 16420415 - 2⁴ = 16420399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2000 + ... + 6069.

It is an arithmetic number, because the mean of its divisors is an integer number (1379970).

Almost surely, 2^16420415 is an apocalyptic number.

16420415 is a deficient number, since it is larger than the sum of its proper divisors (5659105).

16420415 is a wasteful number, since it uses less digits than its factorization.

16420415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8122.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 16420415 is about 4052.2111248058. The cubic root of 16420415 is about 254.1721970787.

Adding to 16420415 its reverse (51402461), we get a palindrome (67822876).

The spelling of 16420415 in words is "sixteen million, four hundred twenty thousand, four hundred fifteen".