172042628 has 12 divisors (see below), whose sum is σ = 302757840. Its totient is φ = 85540392.

The previous prime is 172042621. The next prime is 172042681. The reversal of 172042628 is 826240271.

It is a junction number, because it is equal to n+sod(n) for n = 172042594 and 172042603.

It is not an unprimeable number, because it can be changed into a prime (172042621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119426 + ... + 120857.

It is an arithmetic number, because the mean of its divisors is an integer number (25229820).

Almost surely, 2^172042628 is an apocalyptic number.

It is an amenable number.

172042628 is a deficient number, since it is larger than the sum of its proper divisors (130715212).

172042628 is a wasteful number, since it uses less digits than its factorization.

172042628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240466 (or 240464 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 172042628 is about 13116.5021251857. The cubic root of 172042628 is about 556.1757160745.

Adding to 172042628 its reverse (826240271), we get a palindrome (998282899).

The spelling of 172042628 in words is "one hundred seventy-two million, forty-two thousand, six hundred twenty-eight".