1028447132 has 12 divisors (see below), whose sum is σ = 1800679440. Its totient is φ = 513967296.

The previous prime is 1028447111. The next prime is 1028447137. The reversal of 1028447132 is 2317448201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028447137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54893 + ... + 71204.

It is an arithmetic number, because the mean of its divisors is an integer number (150056620).

Almost surely, 2^1028447132 is an apocalyptic number.

It is an amenable number.

1028447132 is a deficient number, since it is larger than the sum of its proper divisors (772232308).

1028447132 is a wasteful number, since it uses less digits than its factorization.

1028447132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128140 (or 128138 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 1028447132 is about 32069.4111576748. The cubic root of 1028447132 is about 1009.3938564750.

The spelling of 1028447132 in words is "one billion, twenty-eight million, four hundred forty-seven thousand, one hundred thirty-two".