20368470 has 16 divisors (see below), whose sum is σ = 48884400. Its totient is φ = 5431584.

The previous prime is 20368459. The next prime is 20368471. The reversal of 20368470 is 7486302.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 678949 = 20368470 / (2 + 0 + 3 + 6 + 8 + 4 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20368471) 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 7 ways as a sum of consecutive naturals, for example, 339445 + ... + 339504.

It is an arithmetic number, because the mean of its divisors is an integer number (3055275).

Almost surely, 2^20368470 is an apocalyptic number.

20368470 is an abundant number, since it is smaller than the sum of its proper divisors (28515930).

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

20368470 is a wasteful number, since it uses less digits than its factorization.

20368470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678959.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20368470 is about 4513.1441368518. The cubic root of 20368470 is about 273.0985971332.

The spelling of 20368470 in words is "twenty million, three hundred sixty-eight thousand, four hundred seventy".