1328654992 has 60 divisors (see below), whose sum is σ = 3170740140. Its totient is φ = 535922688.

The previous prime is 1328654983. The next prime is 1328655037. The reversal of 1328654992 is 2994568231.

It can be written as a sum of positive squares in 2 ways, for example, as 771506176 + 557148816 = 27776^2 + 23604^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36517 + ... + 63172.

It is an arithmetic number, because the mean of its divisors is an integer number (52845669).

Almost surely, 2^1328654992 is an apocalyptic number.

It is an amenable number.

1328654992 is an abundant number, since it is smaller than the sum of its proper divisors (1842085148).

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

1328654992 is a wasteful number, since it uses less digits than its factorization.

1328654992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99728 (or 99715 counting only the distinct ones).

The product of its digits is 933120, while the sum is 49.

The square root of 1328654992 is about 36450.7200477576. The cubic root of 1328654992 is about 1099.3536125275.

The spelling of 1328654992 in words is "one billion, three hundred twenty-eight million, six hundred fifty-four thousand, nine hundred ninety-two".