1155679428 has 24 divisors (see below), whose sum is σ = 2753960832. Its totient is φ = 377029984.

The previous prime is 1155679417. The next prime is 1155679429. The reversal of 1155679428 is 8249765511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1155679429) by changing a digit.

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, 1023975 + ... + 1025102.

It is an arithmetic number, because the mean of its divisors is an integer number (114748368).

Almost surely, 2^1155679428 is an apocalyptic number.

It is an amenable number.

1155679428 is an abundant number, since it is smaller than the sum of its proper divisors (1598281404).

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

1155679428 is a wasteful number, since it uses less digits than its factorization.

1155679428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049131 (or 2049129 counting only the distinct ones).

The product of its digits is 604800, while the sum is 48.

The square root of 1155679428 is about 33995.2853790051. The cubic root of 1155679428 is about 1049.4114397684.

The spelling of 1155679428 in words is "one billion, one hundred fifty-five million, six hundred seventy-nine thousand, four hundred twenty-eight".