172048878 has 24 divisors (see below), whose sum is σ = 388981008. Its totient is φ = 54856032.

The previous prime is 172048873. The next prime is 172048879. The reversal of 172048878 is 878840271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172048873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207375 + ... + 208202.

It is an arithmetic number, because the mean of its divisors is an integer number (16207542).

Almost surely, 2^172048878 is an apocalyptic number.

172048878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

172048878 is an abundant number, since it is smaller than the sum of its proper divisors (216932130).

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

172048878 is a wasteful number, since it uses less digits than its factorization.

172048878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415608 (or 415605 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The square root of 172048878 is about 13116.7403725163. The cubic root of 172048878 is about 556.1824509482.

The spelling of 172048878 in words is "one hundred seventy-two million, forty-eight thousand, eight hundred seventy-eight".