1115428664 has 24 divisors (see below), whose sum is σ = 2390739960. Its totient is φ = 477933744.

The previous prime is 1115428661. The next prime is 1115428703. The reversal of 1115428664 is 4668245111.

It is a super-2 number, since 2×1115428664² = 2488362208945649792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115428661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 247697 + ... + 252159.

It is an arithmetic number, because the mean of its divisors is an integer number (99614165).

Almost surely, 2^1115428664 is an apocalyptic number.

1115428664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1115428664 is an abundant number, since it is smaller than the sum of its proper divisors (1275311296).

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

1115428664 is an frugal number, since it uses more digits than its factorization.

1115428664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8939 (or 4472 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 1115428664 is about 33398.0338343442. The cubic root of 1115428664 is about 1037.0839987790.

The spelling of 1115428664 in words is "one billion, one hundred fifteen million, four hundred twenty-eight thousand, six hundred sixty-four".