1153288620 has 72 divisors (see below), whose sum is σ = 3816343440. Its totient is φ = 279584640.

The previous prime is 1153288607. The next prime is 1153288673. The reversal of 1153288620 is 268823511.

It is a happy number.

1153288620 is a `hidden beast` number, since 1 + 1 + 5 + 3 + 28 + 8 + 620 = 666.

1153288620 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289255 + ... + 293214.

It is an arithmetic number, because the mean of its divisors is an integer number (53004770).

Almost surely, 2^1153288620 is an apocalyptic number.

1153288620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153288620 is an abundant number, since it is smaller than the sum of its proper divisors (2663054820).

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

1153288620 is a wasteful number, since it uses less digits than its factorization.

1153288620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582495 (or 582490 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1153288620 is about 33960.1033567332. The cubic root of 1153288620 is about 1048.6872846907.

The spelling of 1153288620 in words is "one billion, one hundred fifty-three million, two hundred eighty-eight thousand, six hundred twenty".