1101272280 has 32 divisors (see below), whose sum is σ = 3303817200. Its totient is φ = 293672576.

The previous prime is 1101272251. The next prime is 1101272317. The reversal of 1101272280 is 822721011.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1101272280.

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 7 ways as a sum of consecutive naturals, for example, 4588515 + ... + 4588754.

Almost surely, 2^1101272280 is an apocalyptic number.

1101272280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101272280 is an abundant number, since it is smaller than the sum of its proper divisors (2202544920).

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

1101272280 is a wasteful number, since it uses less digits than its factorization.

1101272280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9177283 (or 9177279 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 1101272280 is about 33185.4227033497. The cubic root of 1101272280 is about 1032.6779467662.

Adding to 1101272280 its reverse (822721011), we get a palindrome (1923993291).

The spelling of 1101272280 in words is "one billion, one hundred one million, two hundred seventy-two thousand, two hundred eighty".