20282436 has 18 divisors (see below), whose sum is σ = 51269582. Its totient is φ = 6760800.

The previous prime is 20282419. The next prime is 20282447. The reversal of 20282436 is 63428202.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 7322436 = 3600^2 + 2706^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×20282436² = 822754420188192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281665 + ... + 281736.

Almost surely, 2^20282436 is an apocalyptic number.

It is an amenable number.

20282436 is an abundant number, since it is smaller than the sum of its proper divisors (30987146).

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

20282436 is a wasteful number, since it uses less digits than its factorization.

20282436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563411 (or 563406 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20282436 is about 4503.6025579529. The cubic root of 20282436 is about 272.7135424603.

The spelling of 20282436 in words is "twenty million, two hundred eighty-two thousand, four hundred thirty-six".