724222620 has 576 divisors, whose sum is σ = 2817884160. Its totient is φ = 153964800.

The previous prime is 724222591. The next prime is 724222673. The reversal of 724222620 is 26222427.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 23362005 + ... + 23362035.

It is an arithmetic number, because the mean of its divisors is an integer number (4892160).

Almost surely, 2^724222620 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 724222620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1408942080).

724222620 is an abundant number, since it is smaller than the sum of its proper divisors (2093661540).

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

724222620 is a wasteful number, since it uses less digits than its factorization.

724222620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 724222620 is about 26911.3845797648. The cubic root of 724222620 is about 898.0296896780.

The spelling of 724222620 in words is "seven hundred twenty-four million, two hundred twenty-two thousand, six hundred twenty".