1328769492 has 48 divisors (see below), whose sum is σ = 3278575104. Its totient is φ = 418176000.

The previous prime is 1328769479. The next prime is 1328769539. The reversal of 1328769492 is 2949678231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28309 + ... + 58812.

It is an arithmetic number, because the mean of its divisors is an integer number (68303648).

Almost surely, 2^1328769492 is an apocalyptic number.

1328769492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1328769492 is an abundant number, since it is smaller than the sum of its proper divisors (1949805612).

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

1328769492 is a wasteful number, since it uses less digits than its factorization.

1328769492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87200 (or 87198 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 1328769492 is about 36452.2906276135. The cubic root of 1328769492 is about 1099.3851914233.

The spelling of 1328769492 in words is "one billion, three hundred twenty-eight million, seven hundred sixty-nine thousand, four hundred ninety-two".