13922505 has 24 divisors (see below), whose sum is σ = 24220872. Its totient is φ = 7398144.

The previous prime is 13922483. The next prime is 13922509. The reversal of 13922505 is 50522931.

13922505 is a `hidden beast` number, since 139 + 22 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8277129 + 5645376 = 2877^2 + 2376^2 .

It is not a de Polignac number, because 13922505 - 2¹² = 13918409 is a prime.

It is a super-2 number, since 2×13922505² = 387672290950050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13922509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20227 + ... + 20903.

It is an arithmetic number, because the mean of its divisors is an integer number (1009203).

Almost surely, 2^13922505 is an apocalyptic number.

13922505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13922505 is a deficient number, since it is larger than the sum of its proper divisors (10298367).

13922505 is a wasteful number, since it uses less digits than its factorization.

13922505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 13922505 is about 3731.2873113712. The cubic root of 13922505 is about 240.5687034207.

The spelling of 13922505 in words is "thirteen million, nine hundred twenty-two thousand, five hundred five".