1200155352 has 32 divisors (see below), whose sum is σ = 3273151680. Its totient is φ = 363683360.

The previous prime is 1200155287. The next prime is 1200155381. The reversal of 1200155352 is 2535510021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2272758 + ... + 2273285.

It is an arithmetic number, because the mean of its divisors is an integer number (102285990).

Almost surely, 2^1200155352 is an apocalyptic number.

1200155352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200155352 is an abundant number, since it is smaller than the sum of its proper divisors (2072996328).

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

1200155352 is a wasteful number, since it uses less digits than its factorization.

1200155352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546063 (or 4546059 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1200155352 is about 34643.2583917853. The cubic root of 1200155352 is about 1062.7044244633.

Adding to 1200155352 its reverse (2535510021), we get a palindrome (3735665373).

The spelling of 1200155352 in words is "one billion, two hundred million, one hundred fifty-five thousand, three hundred fifty-two".