20243470 has 16 divisors (see below), whose sum is σ = 39241440. Its totient is φ = 7474464.

The previous prime is 20243467. The next prime is 20243471. The reversal of 20243470 is 7434202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77730 + ... + 77989.

It is an arithmetic number, because the mean of its divisors is an integer number (2452590).

Almost surely, 2^20243470 is an apocalyptic number.

20243470 is a deficient number, since it is larger than the sum of its proper divisors (18997970).

20243470 is a wasteful number, since it uses less digits than its factorization.

20243470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155739.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 20243470 is about 4499.2743859427. The cubic root of 20243470 is about 272.5387875096.

Adding to 20243470 its reverse (7434202), we get a palindrome (27677672).

The spelling of 20243470 in words is "twenty million, two hundred forty-three thousand, four hundred seventy".