672271884 has 18 divisors (see below), whose sum is σ = 1699354020. Its totient is φ = 224090616.

The previous prime is 672271883. The next prime is 672271937. The reversal of 672271884 is 488172276.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (672271883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9337074 + ... + 9337145.

Almost surely, 2^672271884 is an apocalyptic number.

It is an amenable number.

672271884 is an abundant number, since it is smaller than the sum of its proper divisors (1027082136).

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

672271884 is a wasteful number, since it uses less digits than its factorization.

672271884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18674229 (or 18674224 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 672271884 is about 25928.2063398146. The cubic root of 672271884 is about 876.0219391515.

It can be divided in two parts, 6722 and 71884, that added together give a triangular number (78606 = T₃₉₆).

The spelling of 672271884 in words is "six hundred seventy-two million, two hundred seventy-one thousand, eight hundred eighty-four".