16120905 has 16 divisors (see below), whose sum is σ = 26158464. Its totient is φ = 8476160.

The previous prime is 16120903. The next prime is 16120921. The reversal of 16120905 is 50902161.

It is not a de Polignac number, because 16120905 - 2¹ = 16120903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16120903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6504 + ... + 8633.

It is an arithmetic number, because the mean of its divisors is an integer number (1634904).

Almost surely, 2^16120905 is an apocalyptic number.

16120905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16120905 is a deficient number, since it is larger than the sum of its proper divisors (10037559).

16120905 is a wasteful number, since it uses less digits than its factorization.

16120905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15216.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 16120905 is about 4015.0846815478. The cubic root of 16120905 is about 252.6173293886.

The spelling of 16120905 in words is "sixteen million, one hundred twenty thousand, nine hundred five".