461721392 has 40 divisors (see below), whose sum is σ = 980889600. Its totient is φ = 208802880.

The previous prime is 461721391. The next prime is 461721419. The reversal of 461721392 is 293127164.

It is not an unprimeable number, because it can be changed into a prime (461721391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28433 + ... + 41615.

It is an arithmetic number, because the mean of its divisors is an integer number (24522240).

Almost surely, 2^461721392 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 461721392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490444800).

461721392 is an abundant number, since it is smaller than the sum of its proper divisors (519168208).

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

461721392 is a wasteful number, since it uses less digits than its factorization.

461721392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13401 (or 13395 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 461721392 is about 21487.7032741985. The cubic root of 461721392 is about 772.9059763905.

The spelling of 461721392 in words is "four hundred sixty-one million, seven hundred twenty-one thousand, three hundred ninety-two".