1575728020 has 24 divisors (see below), whose sum is σ = 3318525000. Its totient is φ = 628482432.

The previous prime is 1575727987. The next prime is 1575728023. The reversal of 1575728020 is 208275751.

It can be written as a sum of positive squares in 4 ways, for example, as 443270916 + 1132457104 = 21054^2 + 33652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1575728023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105895 + ... + 119854.

It is an arithmetic number, because the mean of its divisors is an integer number (138271875).

Almost surely, 2^1575728020 is an apocalyptic number.

1575728020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1575728020 is an abundant number, since it is smaller than the sum of its proper divisors (1742796980).

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

1575728020 is a wasteful number, since it uses less digits than its factorization.

1575728020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226107 (or 226105 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 1575728020 is about 39695.4407961418. The cubic root of 1575728020 is about 1163.6626256613.

The spelling of 1575728020 in words is "one billion, five hundred seventy-five million, seven hundred twenty-eight thousand, twenty".