172428597 has 24 divisors (see below), whose sum is σ = 272308608. Its totient is φ = 104270400.

The previous prime is 172428593. The next prime is 172428601. The reversal of 172428597 is 795824271.

It is a happy number.

172428597 is a `hidden beast` number, since 17 + 2 + 42 + 8 + 597 = 666.

It is an interprime number because it is at equal distance from previous prime (172428593) and next prime (172428601).

It is not a de Polignac number, because 172428597 - 2² = 172428593 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172428593) 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 23 ways as a sum of consecutive naturals, for example, 49908 + ... + 53250.

It is an arithmetic number, because the mean of its divisors is an integer number (11346192).

Almost surely, 2^172428597 is an apocalyptic number.

It is an amenable number.

172428597 is a deficient number, since it is larger than the sum of its proper divisors (99880011).

172428597 is a wasteful number, since it uses less digits than its factorization.

172428597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881 (or 3878 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 172428597 is about 13131.2069894584. The cubic root of 172428597 is about 556.5913228652.

The spelling of 172428597 in words is "one hundred seventy-two million, four hundred twenty-eight thousand, five hundred ninety-seven".