172848990 has 64 divisors (see below), whose sum is σ = 436311360. Its totient is φ = 43760640.

The previous prime is 172848983. The next prime is 172848997. The reversal of 172848990 is 99848271.

It is an interprime number because it is at equal distance from previous prime (172848983) and next prime (172848997).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172848997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51442 + ... + 54698.

It is an arithmetic number, because the mean of its divisors is an integer number (6817365).

Almost surely, 2^172848990 is an apocalyptic number.

172848990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172848990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218155680).

172848990 is an abundant number, since it is smaller than the sum of its proper divisors (263462370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172848990 is a wasteful number, since it uses less digits than its factorization.

172848990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 172848990 is about 13147.2046458553. The cubic root of 172848990 is about 557.0432919667.

The spelling of 172848990 in words is "one hundred seventy-two million, eight hundred forty-eight thousand, nine hundred ninety".