1200271828 has 24 divisors (see below), whose sum is σ = 2404007424. Its totient is φ = 513660000.

The previous prime is 1200271817. The next prime is 1200271861. The reversal of 1200271828 is 8281720021.

It is a super-2 number, since 2×1200271828² = 2881304922180923168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1200271828.

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, 10948 + ... + 50203.

It is an arithmetic number, because the mean of its divisors is an integer number (100166976).

Almost surely, 2^1200271828 is an apocalyptic number.

It is an amenable number.

1200271828 is an abundant number, since it is smaller than the sum of its proper divisors (1203735596).

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

1200271828 is a wasteful number, since it uses less digits than its factorization.

1200271828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61863 (or 61861 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 1200271828 is about 34644.9394284360. The cubic root of 1200271828 is about 1062.7388021118.

Adding to 1200271828 its reverse (8281720021), we get a palindrome (9481991849).

The spelling of 1200271828 in words is "one billion, two hundred million, two hundred seventy-one thousand, eight hundred twenty-eight".