172067280 has 160 divisors (see below), whose sum is σ = 665100288. Its totient is φ = 35750400.

The previous prime is 172067263. The next prime is 172067297. The reversal of 172067280 is 82760271.

It is an interprime number because it is at equal distance from previous prime (172067263) and next prime (172067297).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13825 + ... + 23135.

Almost surely, 2^172067280 is an apocalyptic number.

172067280 is a gapful number since it is divisible by the number (10) 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 172067280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332550144).

172067280 is an abundant number, since it is smaller than the sum of its proper divisors (493033008).

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

172067280 is a wasteful number, since it uses less digits than its factorization.

172067280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9345 (or 9339 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 172067280 is about 13117.4418237704. The cubic root of 172067280 is about 556.2022796246.

The spelling of 172067280 in words is "one hundred seventy-two million, sixty-seven thousand, two hundred eighty".