1028288031 has 8 divisors (see below), whose sum is σ = 1371579264. Its totient is φ = 685261080.

The previous prime is 1028288021. The next prime is 1028288039. The reversal of 1028288031 is 1308828201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1028288031 - 2⁷ = 1028287903 is a prime.

It is a super-2 number, since 2×1028288031² = 2114752549395713922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1028287983 and 1028288001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028288039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56805 + ... + 72686.

It is an arithmetic number, because the mean of its divisors is an integer number (171447408).

Almost surely, 2^1028288031 is an apocalyptic number.

1028288031 is a deficient number, since it is larger than the sum of its proper divisors (343291233).

1028288031 is a wasteful number, since it uses less digits than its factorization.

1028288031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132141.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 1028288031 is about 32066.9304892127. The cubic root of 1028288031 is about 1009.3418026393.

The spelling of 1028288031 in words is "one billion, twenty-eight million, two hundred eighty-eight thousand, thirty-one".