172274284 has 48 divisors (see below), whose sum is σ = 372472128. Its totient is φ = 67891968.

The previous prime is 172274281. The next prime is 172274287. The reversal of 172274284 is 482472271.

It is an interprime number because it is at equal distance from previous prime (172274281) and next prime (172274287).

It is not an unprimeable number, because it can be changed into a prime (172274281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114642 + ... + 116134.

It is an arithmetic number, because the mean of its divisors is an integer number (7759836).

Almost surely, 2^172274284 is an apocalyptic number.

172274284 is a gapful number since it is divisible by the number (14) 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 172274284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186236064).

172274284 is an abundant number, since it is smaller than the sum of its proper divisors (200197844).

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

172274284 is a wasteful number, since it uses less digits than its factorization.

172274284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834 (or 1832 counting only the distinct ones).

The product of its digits is 50176, while the sum is 37.

The square root of 172274284 is about 13125.3298625216. The cubic root of 172274284 is about 556.4252349639.

The spelling of 172274284 in words is "one hundred seventy-two million, two hundred seventy-four thousand, two hundred eighty-four".