1057728566 has 8 divisors (see below), whose sum is σ = 1586735904. Its totient is φ = 528816600.

The previous prime is 1057728563. The next prime is 1057728589. The reversal of 1057728566 is 6658277501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1057728566² = 2237579438664832712, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1057728566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057728563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20036 + ... + 50168.

It is an arithmetic number, because the mean of its divisors is an integer number (198341988).

Almost surely, 2^1057728566 is an apocalyptic number.

1057728566 is a deficient number, since it is larger than the sum of its proper divisors (529007338).

1057728566 is a wasteful number, since it uses less digits than its factorization.

1057728566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47686.

The product of its (nonzero) digits is 705600, while the sum is 47.

The square root of 1057728566 is about 32522.7392142790. The cubic root of 1057728566 is about 1018.8840049752.

The spelling of 1057728566 in words is "one billion, fifty-seven million, seven hundred twenty-eight thousand, five hundred sixty-six".