1052290728 has 48 divisors (see below), whose sum is σ = 2854156500. Its totient is φ = 350246400.

The previous prime is 1052290717. The next prime is 1052290739. The reversal of 1052290728 is 8270922501.

It is an interprime number because it is at equal distance from previous prime (1052290717) and next prime (1052290739).

It can be written as a sum of positive squares in 2 ways, for example, as 847857924 + 204432804 = 29118^2 + 14298^2 .

It is a super-2 number, since 2×1052290728² = 2214631552469539968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1052290692 and 1052290701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40048 + ... + 60896.

Almost surely, 2^1052290728 is an apocalyptic number.

1052290728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1052290728 is an abundant number, since it is smaller than the sum of its proper divisors (1801865772).

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

1052290728 is a wasteful number, since it uses less digits than its factorization.

1052290728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21562 (or 21555 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1052290728 is about 32439.0309349709. The cubic root of 1052290728 is about 1017.1349588709.

The spelling of 1052290728 in words is "one billion, fifty-two million, two hundred ninety thousand, seven hundred twenty-eight".