1200228240 has 160 divisors (see below), whose sum is σ = 3860038656. Its totient is φ = 308183040.

The previous prime is 1200228229. The next prime is 1200228241. The reversal of 1200228240 is 428220021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1200228241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2626092 + ... + 2626548.

Almost surely, 2^1200228240 is an apocalyptic number.

1200228240 is a gapful number since it is divisible by the number (10) 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 1200228240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1930019328).

1200228240 is an abundant number, since it is smaller than the sum of its proper divisors (2659810416).

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

1200228240 is a wasteful number, since it uses less digits than its factorization.

1200228240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1200228240 is about 34644.3103553816. The cubic root of 1200228240 is about 1062.7259374649.

Adding to 1200228240 its reverse (428220021), we get a palindrome (1628448261).

The spelling of 1200228240 in words is "one billion, two hundred million, two hundred twenty-eight thousand, two hundred forty".