501430722 has 64 divisors (see below), whose sum is σ = 1109033856. Its totient is φ = 150197760.

The previous prime is 501430703. The next prime is 501430723. The reversal of 501430722 is 227034105.

It is a junction number, because it is equal to n+sod(n) for n = 501430692 and 501430701.

It is not an unprimeable number, because it can be changed into a prime (501430723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 472072 + ... + 473132.

It is an arithmetic number, because the mean of its divisors is an integer number (17328654).

Almost surely, 2^501430722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501430722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554516928).

501430722 is an abundant number, since it is smaller than the sum of its proper divisors (607603134).

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

501430722 is a wasteful number, since it uses less digits than its factorization.

501430722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 501430722 is about 22392.6488384023. The cubic root of 501430722 is about 794.4568482535.

Adding to 501430722 its reverse (227034105), we get a palindrome (728464827).

The spelling of 501430722 in words is "five hundred one million, four hundred thirty thousand, seven hundred twenty-two".