672535220 has 96 divisors (see below), whose sum is σ = 1660538880. Its totient is φ = 224023680.

The previous prime is 672535211. The next prime is 672535223. The reversal of 672535220 is 22535276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672535223) 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 31 ways as a sum of consecutive naturals, for example, 1177535 + ... + 1178105.

It is an arithmetic number, because the mean of its divisors is an integer number (17297280).

Almost surely, 2^672535220 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 672535220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830269440).

672535220 is an abundant number, since it is smaller than the sum of its proper divisors (988003660).

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

672535220 is a wasteful number, since it uses less digits than its factorization.

672535220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 672535220 is about 25933.2840188049. The cubic root of 672535220 is about 876.1363065697.

The spelling of 672535220 in words is "six hundred seventy-two million, five hundred thirty-five thousand, two hundred twenty".