1090250728 has 64 divisors (see below), whose sum is σ = 2393763840. Its totient is φ = 455815104.

The previous prime is 1090250719. The next prime is 1090250741. The reversal of 1090250728 is 8270520901.

It is a junction number, because it is equal to n+sod(n) for n = 1090250693 and 1090250702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1228701 + ... + 1229587.

It is an arithmetic number, because the mean of its divisors is an integer number (37402560).

Almost surely, 2^1090250728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1090250728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1196881920).

1090250728 is an abundant number, since it is smaller than the sum of its proper divisors (1303513112).

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

1090250728 is a wasteful number, since it uses less digits than its factorization.

1090250728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1090250728 is about 33018.9449861742. The cubic root of 1090250728 is about 1029.2213702565.

The spelling of 1090250728 in words is "one billion, ninety million, two hundred fifty thousand, seven hundred twenty-eight".