1201800528 has 240 divisors, whose sum is σ = 3626767872. Its totient is φ = 370944000.

The previous prime is 1201800511. The next prime is 1201800557. The reversal of 1201800528 is 8250081021.

1201800528 is a `hidden beast` number, since 120 + 18 + 0 + 0 + 528 = 666.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 16926733 + ... + 16926803.

Almost surely, 2^1201800528 is an apocalyptic number.

1201800528 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 1201800528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1813383936).

1201800528 is an abundant number, since it is smaller than the sum of its proper divisors (2424967344).

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

1201800528 is a wasteful number, since it uses less digits than its factorization.

1201800528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 1201800528 is about 34666.9947933189. The cubic root of 1201800528 is about 1063.1897887246.

Adding to 1201800528 its reverse (8250081021), we get a palindrome (9451881549).

The spelling of 1201800528 in words is "one billion, two hundred one million, eight hundred thousand, five hundred twenty-eight".