172396029 has 16 divisors (see below), whose sum is σ = 248439744. Its totient is φ = 105705600.

The previous prime is 172396013. The next prime is 172396033. The reversal of 172396029 is 920693271.

It is not a de Polignac number, because 172396029 - 2⁴ = 172396013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172396069) 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, 3094 + ... + 18824.

It is an arithmetic number, because the mean of its divisors is an integer number (15527484).

Almost surely, 2^172396029 is an apocalyptic number.

It is an amenable number.

172396029 is a deficient number, since it is larger than the sum of its proper divisors (76043715).

172396029 is a wasteful number, since it uses less digits than its factorization.

172396029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16028.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 172396029 is about 13129.9668316413. The cubic root of 172396029 is about 556.5562780063.

The spelling of 172396029 in words is "one hundred seventy-two million, three hundred ninety-six thousand, twenty-nine".