172700427 has 16 divisors (see below), whose sum is σ = 236192000. Its totient is φ = 112184352.

The previous prime is 172700401. The next prime is 172700431. The reversal of 172700427 is 724007271.

It is not a de Polignac number, because 172700427 - 2¹² = 172696331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172700394 and 172700403.

It is not an unprimeable number, because it can be changed into a prime (172700027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61449 + ... + 64197.

It is an arithmetic number, because the mean of its divisors is an integer number (14762000).

Almost surely, 2^172700427 is an apocalyptic number.

172700427 is a deficient number, since it is larger than the sum of its proper divisors (63491573).

172700427 is a wasteful number, since it uses less digits than its factorization.

172700427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 172700427 is about 13141.5534469864. The cubic root of 172700427 is about 556.8836540782.

Adding to 172700427 its reverse (724007271), we get a palindrome (896707698).

The spelling of 172700427 in words is "one hundred seventy-two million, seven hundred thousand, four hundred twenty-seven".