1200350520 has 48 divisors (see below), whose sum is σ = 3901140360. Its totient is φ = 320093376.

The previous prime is 1200350509. The next prime is 1200350521. The reversal of 1200350520 is 250530021.

It is a happy number.

1200350520 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1200350493 and 1200350502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200350521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1666794 + ... + 1667513.

Almost surely, 2^1200350520 is an apocalyptic number.

1200350520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200350520 is an abundant number, since it is smaller than the sum of its proper divisors (2700789840).

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

1200350520 is a wasteful number, since it uses less digits than its factorization.

1200350520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334324 (or 3334317 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1200350520 is about 34646.0751023835. The cubic root of 1200350520 is about 1062.7620266326.

Adding to 1200350520 its reverse (250530021), we get a palindrome (1450880541).

The spelling of 1200350520 in words is "one billion, two hundred million, three hundred fifty thousand, five hundred twenty".