20387374 has 8 divisors (see below), whose sum is σ = 34949808. Its totient is φ = 8737440.

The previous prime is 20387371. The next prime is 20387383. The reversal of 20387374 is 47378302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 203 and 87374 contains 20387374 itself.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20387371) 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 3 ways as a sum of consecutive naturals, for example, 728107 + ... + 728134.

It is an arithmetic number, because the mean of its divisors is an integer number (4368726).

Almost surely, 2^20387374 is an apocalyptic number.

20387374 is a deficient number, since it is larger than the sum of its proper divisors (14562434).

20387374 is a wasteful number, since it uses less digits than its factorization.

20387374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456250.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 20387374 is about 4515.2379782244. The cubic root of 20387374 is about 273.1830587144.

The spelling of 20387374 in words is "twenty million, three hundred eighty-seven thousand, three hundred seventy-four".