172270476 has 108 divisors (see below), whose sum is σ = 525463848. Its totient is φ = 49206528.

The previous prime is 172270471. The next prime is 172270477. The reversal of 172270476 is 674072271.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (108).

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

It is a self number, because there is not a number n which added to its sum of digits gives 172270476.

It is not an unprimeable number, because it can be changed into a prime (172270471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 45820 + ... + 49436.

It is an arithmetic number, because the mean of its divisors is an integer number (4865406).

Almost surely, 2^172270476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172270476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262731924).

172270476 is an abundant number, since it is smaller than the sum of its proper divisors (353193372).

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

172270476 is a wasteful number, since it uses less digits than its factorization.

172270476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650 (or 3629 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 172270476 is about 13125.1847986990. The cubic root of 172270476 is about 556.4211351395.

The spelling of 172270476 in words is "one hundred seventy-two million, two hundred seventy thousand, four hundred seventy-six".