1152821140 has 12 divisors (see below), whose sum is σ = 2420924436. Its totient is φ = 461128448.

The previous prime is 1152821101. The next prime is 1152821177. The reversal of 1152821140 is 411282511.

It can be written as a sum of positive squares in 2 ways, for example, as 193432464 + 959388676 = 13908^2 + 30974^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28820509 + ... + 28820548.

It is an arithmetic number, because the mean of its divisors is an integer number (201743703).

Almost surely, 2^1152821140 is an apocalyptic number.

1152821140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152821140 is an abundant number, since it is smaller than the sum of its proper divisors (1268103296).

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

1152821140 is a wasteful number, since it uses less digits than its factorization.

1152821140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57641066 (or 57641064 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1152821140 is about 33953.2198767657. The cubic root of 1152821140 is about 1048.5455720910.

The spelling of 1152821140 in words is "one billion, one hundred fifty-two million, eight hundred twenty-one thousand, one hundred forty".