1366020288 has 140 divisors (see below), whose sum is σ = 4148721192. Its totient is φ = 444165120.

The previous prime is 1366020233. The next prime is 1366020289. The reversal of 1366020288 is 8820206631.

It is a super-2 number, since 2×1366020288² = 3732022854455205888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1366020289) 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 19 ways as a sum of consecutive naturals, for example, 209331 + ... + 215757.

Almost surely, 2^1366020288 is an apocalyptic number.

1366020288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366020288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2074360596).

1366020288 is an abundant number, since it is smaller than the sum of its proper divisors (2782700904).

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

1366020288 is an equidigital number, since it uses as much as digits as its factorization.

1366020288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492 (or 6473 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1366020288 is about 36959.7116871872. The cubic root of 1366020288 is about 1109.5640654853.

The spelling of 1366020288 in words is "one billion, three hundred sixty-six million, twenty thousand, two hundred eighty-eight".