1328005692 has 72 divisors (see below), whose sum is σ = 3749055856. Its totient is φ = 408613248.

The previous prime is 1328005691. The next prime is 1328005699. The reversal of 1328005692 is 2965008231.

1328005692 is a `hidden beast` number, since 13 + 2 + 80 + 0 + 569 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328005691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39913 + ... + 65184.

Almost surely, 2^1328005692 is an apocalyptic number.

1328005692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1328005692 is an abundant number, since it is smaller than the sum of its proper divisors (2421050164).

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

1328005692 is a wasteful number, since it uses less digits than its factorization.

1328005692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105129 (or 105115 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1328005692 is about 36441.8124137645. The cubic root of 1328005692 is about 1099.1745024215.

The spelling of 1328005692 in words is "one billion, three hundred twenty-eight million, five thousand, six hundred ninety-two".