1293488028 has 120 divisors (see below), whose sum is σ = 3882051712. Its totient is φ = 369410544.

The previous prime is 1293488017. The next prime is 1293488033. The reversal of 1293488028 is 8208843921.

It is a super-2 number, since 2×1293488028² = 3346222557158657568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 549951 + ... + 552297.

Almost surely, 2^1293488028 is an apocalyptic number.

1293488028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1293488028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1941025856).

1293488028 is an abundant number, since it is smaller than the sum of its proper divisors (2588563684).

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

1293488028 is an frugal number, since it uses more digits than its factorization.

1293488028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385 (or 2359 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 1293488028 is about 35965.0945779376. The cubic root of 1293488028 is about 1089.5674933053.

The spelling of 1293488028 in words is "one billion, two hundred ninety-three million, four hundred eighty-eight thousand, twenty-eight".