20384075 has 12 divisors (see below), whose sum is σ = 25342128. Its totient is φ = 16264800.

The previous prime is 20384059. The next prime is 20384099. The reversal of 20384075 is 57048302.

It is a happy number.

It is not a de Polignac number, because 20384075 - 2⁴ = 20384059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11765 + ... + 13385.

It is an arithmetic number, because the mean of its divisors is an integer number (2111844).

Almost surely, 2^20384075 is an apocalyptic number.

20384075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20384075 is a deficient number, since it is larger than the sum of its proper divisors (4958053).

20384075 is a wasteful number, since it uses less digits than its factorization.

20384075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 2129 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20384075 is about 4514.8726449370. The cubic root of 20384075 is about 273.1683228044.

It can be divided in two parts, 2038 and 4075, that multiplied together give a triangular number (8304850 = T₄₀₇₅).

The spelling of 20384075 in words is "twenty million, three hundred eighty-four thousand, seventy-five".