1601728600 has 24 divisors (see below), whose sum is σ = 3724019460. Its totient is φ = 640691360.

The previous prime is 1601728577. The next prime is 1601728607. The reversal of 1601728600 is 68271061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601728607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4004122 + ... + 4004521.

Almost surely, 2^1601728600 is an apocalyptic number.

1601728600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601728600 is an abundant number, since it is smaller than the sum of its proper divisors (2122290860).

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

1601728600 is a wasteful number, since it uses less digits than its factorization.

1601728600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8008659 (or 8008650 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1601728600 is about 40021.6016670997. The cubic root of 1601728600 is about 1170.0281484450.

Adding to 1601728600 its reverse (68271061), we get a palindrome (1669999661).

The spelling of 1601728600 in words is "one billion, six hundred one million, seven hundred twenty-eight thousand, six hundred".