671740272 has 120 divisors (see below), whose sum is σ = 2154612096. Its totient is φ = 191380608.

The previous prime is 671740249. The next prime is 671740283. The reversal of 671740272 is 272047176.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 470023 + ... + 471449.

Almost surely, 2^671740272 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 671740272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077306048).

671740272 is an abundant number, since it is smaller than the sum of its proper divisors (1482871824).

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

671740272 is a wasteful number, since it uses less digits than its factorization.

671740272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1906 counting only the distinct ones).

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

The square root of 671740272 is about 25917.9526969242. The cubic root of 671740272 is about 875.7909678263.

The spelling of 671740272 in words is "six hundred seventy-one million, seven hundred forty thousand, two hundred seventy-two".