20387367 has 96 divisors (see below), whose sum is σ = 41373696. Its totient is φ = 9331200.

The previous prime is 20387357. The next prime is 20387371. The reversal of 20387367 is 76378302.

It is not a de Polignac number, because 20387367 - 2¹⁹ = 19863079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20387357) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 279243 + ... + 279315.

It is an arithmetic number, because the mean of its divisors is an integer number (430976).

Almost surely, 2^20387367 is an apocalyptic number.

20387367 is an abundant number, since it is smaller than the sum of its proper divisors (20986329).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20387367 is a wasteful number, since it uses less digits than its factorization.

20387367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 20387367 is about 4515.2372030714. The cubic root of 20387367 is about 273.1830274486.

The spelling of 20387367 in words is "twenty million, three hundred eighty-seven thousand, three hundred sixty-seven".