1156328064 has 48 divisors (see below), whose sum is σ = 3327457770. Its totient is φ = 385442304.

The previous prime is 1156328053. The next prime is 1156328071. The reversal of 1156328064 is 4608236511.

It is a happy number.

1156328064 is a `hidden beast` number, since 1 + 15 + 632 + 8 + 0 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1137038400 + 19289664 = 33720^2 + 4392^2 .

It is a tau number, because it is divible by the number of its divisors (48).

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

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 5 ways as a sum of consecutive naturals, for example, 500727 + ... + 503030.

Almost surely, 2^1156328064 is an apocalyptic number.

It is an amenable number.

1156328064 is an abundant number, since it is smaller than the sum of its proper divisors (2171129706).

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

1156328064 is a wasteful number, since it uses less digits than its factorization.

1156328064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003777 (or 1003762 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1156328064 is about 34004.8241283498. The cubic root of 1156328064 is about 1049.6077337448.

The spelling of 1156328064 in words is "one billion, one hundred fifty-six million, three hundred twenty-eight thousand, sixty-four".