19800573 has 16 divisors (see below), whose sum is σ = 28566720. Its totient is φ = 12127104.

The previous prime is 19800553. The next prime is 19800601. The reversal of 19800573 is 37500891.

It is not a de Polignac number, because 19800573 - 2⁸ = 19800317 is a prime.

It is a super-2 number, since 2×19800573² = 784125382256658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19800553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7998 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (1785420).

Almost surely, 2^19800573 is an apocalyptic number.

19800573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19800573 is a deficient number, since it is larger than the sum of its proper divisors (8766147).

19800573 is a wasteful number, since it uses less digits than its factorization.

19800573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 19800573 is about 4449.7834778784. The cubic root of 19800573 is about 270.5365325703.

The spelling of 19800573 in words is "nineteen million, eight hundred thousand, five hundred seventy-three".