172350828 has 240 divisors, whose sum is σ = 537878880. Its totient is φ = 47609856.

The previous prime is 172350817. The next prime is 172350863. The reversal of 172350828 is 828053271.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 172350792 and 172350801.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2076475 + ... + 2076557.

It is an arithmetic number, because the mean of its divisors is an integer number (2241162).

Almost surely, 2^172350828 is an apocalyptic number.

172350828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172350828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268939440).

172350828 is an abundant number, since it is smaller than the sum of its proper divisors (365528052).

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

172350828 is a wasteful number, since it uses less digits than its factorization.

172350828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 172350828 is about 13128.2454273220. The cubic root of 172350828 is about 556.5076320689.

The spelling of 172350828 in words is "one hundred seventy-two million, three hundred fifty thousand, eight hundred twenty-eight".