1028915232 has 48 divisors (see below), whose sum is σ = 2703365280. Its totient is φ = 342659072.

The previous prime is 1028915221. The next prime is 1028915249. The reversal of 1028915232 is 2325198201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1028915232² = 2117333109283227648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1028915193 and 1028915202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116608 + ... + 125120.

It is an arithmetic number, because the mean of its divisors is an integer number (56320110).

Almost surely, 2^1028915232 is an apocalyptic number.

1028915232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1028915232 is an abundant number, since it is smaller than the sum of its proper divisors (1674450048).

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

1028915232 is a wasteful number, since it uses less digits than its factorization.

1028915232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785 (or 9777 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1028915232 is about 32076.7085593270. The cubic root of 1028915232 is about 1009.5469758662.

The spelling of 1028915232 in words is "one billion, twenty-eight million, nine hundred fifteen thousand, two hundred thirty-two".