1156273152 has 88 divisors (see below), whose sum is σ = 3188407200. Its totient is φ = 372105216.

The previous prime is 1156273147. The next prime is 1156273163. The reversal of 1156273152 is 2513726511.

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, 82599 + ... + 95577.

It is an arithmetic number, because the mean of its divisors is an integer number (36231900).

Almost surely, 2^1156273152 is an apocalyptic number.

1156273152 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 1156273152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1594203600).

1156273152 is an abundant number, since it is smaller than the sum of its proper divisors (2032134048).

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

1156273152 is a wasteful number, since it uses less digits than its factorization.

1156273152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13031 (or 13013 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 1156273152 is about 34004.0167039131. The cubic root of 1156273152 is about 1049.5911188025.

Adding to 1156273152 its reverse (2513726511), we get a palindrome (3669999663).

The spelling of 1156273152 in words is "one billion, one hundred fifty-six million, two hundred seventy-three thousand, one hundred fifty-two".