20282438 has 16 divisors (see below), whose sum is σ = 34087824. Its totient is φ = 8969760.

The previous prime is 20282419. The next prime is 20282447. The reversal of 20282438 is 83428202.

It is a super-2 number, since 2×20282438² = 822754582447688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20282438.

It is a congruent number.

It is an unprimeable number.

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, 11645 + ... + 13272.

It is an arithmetic number, because the mean of its divisors is an integer number (2130489).

Almost surely, 2^20282438 is an apocalyptic number.

20282438 is a deficient number, since it is larger than the sum of its proper divisors (13805386).

20282438 is a wasteful number, since it uses less digits than its factorization.

20282438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24967.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 20282438 is about 4503.6027799974. The cubic root of 20282438 is about 272.7135514242.

The spelling of 20282438 in words is "twenty million, two hundred eighty-two thousand, four hundred thirty-eight".