1156102272 has 384 divisors, whose sum is σ = 4009824000. Its totient is φ = 315850752.

The previous prime is 1156102243. The next prime is 1156102307. The reversal of 1156102272 is 2722016511.

1156102272 is a `hidden beast` number, since 11 + 561 + 0 + 22 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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 47 ways as a sum of consecutive naturals, for example, 4837129 + ... + 4837367.

It is an arithmetic number, because the mean of its divisors is an integer number (10442250).

Almost surely, 2^1156102272 is an apocalyptic number.

1156102272 is a gapful number since it is divisible by the number (12) 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 1156102272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2004912000).

1156102272 is an abundant number, since it is smaller than the sum of its proper divisors (2853721728).

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

1156102272 is a wasteful number, since it uses less digits than its factorization.

1156102272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1156102272 is about 34001.5039667365. The cubic root of 1156102272 is about 1049.5394115953.

Adding to 1156102272 its reverse (2722016511), we get a palindrome (3878118783).

The spelling of 1156102272 in words is "one billion, one hundred fifty-six million, one hundred two thousand, two hundred seventy-two".