172020793 has 8 divisors (see below), whose sum is σ = 199818560. Its totient is φ = 145028880.

The previous prime is 172020781. The next prime is 172020803. The reversal of 172020793 is 397020271.

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

It is a cyclic number.

It is not a de Polignac number, because 172020793 - 2¹⁷ = 171889721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172020293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201003 + ... + 201856.

It is an arithmetic number, because the mean of its divisors is an integer number (24977320).

Almost surely, 2^172020793 is an apocalyptic number.

It is an amenable number.

172020793 is a deficient number, since it is larger than the sum of its proper divisors (27797767).

172020793 is an equidigital number, since it uses as much as digits as its factorization.

172020793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402927.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 172020793 is about 13115.6697503406. The cubic root of 172020793 is about 556.1521858391.

The spelling of 172020793 in words is "one hundred seventy-two million, twenty thousand, seven hundred ninety-three".