16224945 has 32 divisors (see below), whose sum is σ = 28615680. Its totient is φ = 7784640.

The previous prime is 16224893. The next prime is 16224947. The reversal of 16224945 is 54942261.

It is not a de Polignac number, because 16224945 - 2⁶ = 16224881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (16224947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17196 + ... + 18114.

It is an arithmetic number, because the mean of its divisors is an integer number (894240).

Almost surely, 2^16224945 is an apocalyptic number.

16224945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16224945 is a deficient number, since it is larger than the sum of its proper divisors (12390735).

16224945 is a wasteful number, since it uses less digits than its factorization.

16224945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

The product of its digits is 17280, while the sum is 33.

The square root of 16224945 is about 4028.0199850547. The cubic root of 16224945 is about 253.1596059987.

The spelling of 16224945 in words is "sixteen million, two hundred twenty-four thousand, nine hundred forty-five".