1028637012 has 48 divisors (see below), whose sum is σ = 2590116480. Its totient is φ = 315850368.

The previous prime is 1028636957. The next prime is 1028637019. The reversal of 1028637012 is 2107368201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028637019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71914 + ... + 85022.

It is an arithmetic number, because the mean of its divisors is an integer number (53960760).

Almost surely, 2^1028637012 is an apocalyptic number.

1028637012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1028637012 is an abundant number, since it is smaller than the sum of its proper divisors (1561479468).

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

1028637012 is a wasteful number, since it uses less digits than its factorization.

1028637012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13632 (or 13630 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1028637012 is about 32072.3714745262. The cubic root of 1028637012 is about 1009.4559733971.

The spelling of 1028637012 in words is "one billion, twenty-eight million, six hundred thirty-seven thousand, twelve".