20366875 has 10 divisors (see below), whose sum is σ = 25451228. Its totient is φ = 16293000.

The previous prime is 20366851. The next prime is 20366881. The reversal of 20366875 is 57866302.

It is not a de Polignac number, because 20366875 - 2¹³ = 20358683 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15669 + ... + 16918.

Almost surely, 2^20366875 is an apocalyptic number.

20366875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20366875 is a deficient number, since it is larger than the sum of its proper divisors (5084353).

20366875 is an frugal number, since it uses more digits than its factorization.

20366875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32607 (or 32592 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 20366875 is about 4512.9674273143. The cubic root of 20366875 is about 273.0914684087.

It can be divided in two parts, 2036 and 6875, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 20366875 in words is "twenty million, three hundred sixty-six thousand, eight hundred seventy-five".