16923105 has 24 divisors (see below), whose sum is σ = 29643432. Its totient is φ = 8930304.

The previous prime is 16923031. The next prime is 16923107. The reversal of 16923105 is 50132961.

It can be written as a sum of positive squares in 4 ways, for example, as 471969 + 16451136 = 687^2 + 4056^2 .

It is not a de Polignac number, because 16923105 - 2¹² = 16919009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16923107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2427 + ... + 6303.

It is an arithmetic number, because the mean of its divisors is an integer number (1235143).

Almost surely, 2^16923105 is an apocalyptic number.

16923105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16923105 is a deficient number, since it is larger than the sum of its proper divisors (12720327).

16923105 is a wasteful number, since it uses less digits than its factorization.

16923105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985 (or 3982 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 16923105 is about 4113.7701685923. The cubic root of 16923105 is about 256.7398893429.

The spelling of 16923105 in words is "sixteen million, nine hundred twenty-three thousand, one hundred five".