1636428288 has 160 divisors (see below), whose sum is σ = 4963825152. Its totient is φ = 474214400.

The previous prime is 1636428271. The next prime is 1636428293. The reversal of 1636428288 is 8828246361.

It is a super-2 number, since 2×1636428288² = 5355795083533221888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 386503 + ... + 390713.

Almost surely, 2^1636428288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1636428288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2481912576).

1636428288 is an abundant number, since it is smaller than the sum of its proper divisors (3327396864).

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

1636428288 is a wasteful number, since it uses less digits than its factorization.

1636428288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266 (or 4250 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 1636428288 is about 40452.7908555145. The cubic root of 1636428288 is about 1178.4169828900.

It can be divided in two parts, 1636 and 428288, that added together give a palindrome (429924).

The spelling of 1636428288 in words is "one billion, six hundred thirty-six million, four hundred twenty-eight thousand, two hundred eighty-eight".