172883887 has 8 divisors (see below), whose sum is σ = 188826192. Its totient is φ = 156979200.

The previous prime is 172883873. The next prime is 172883899. The reversal of 172883887 is 788388271.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172883887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172883857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687 + ... + 18607.

It is an arithmetic number, because the mean of its divisors is an integer number (23603274).

Almost surely, 2^172883887 is an apocalyptic number.

172883887 is a deficient number, since it is larger than the sum of its proper divisors (15942305).

172883887 is a wasteful number, since it uses less digits than its factorization.

172883887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18809.

The product of its digits is 1204224, while the sum is 52.

The square root of 172883887 is about 13148.5317431263. The cubic root of 172883887 is about 557.0807771567.

The spelling of 172883887 in words is "one hundred seventy-two million, eight hundred eighty-three thousand, eight hundred eighty-seven".