726057420 has 192 divisors, whose sum is σ = 2368590336. Its totient is φ = 164229120.

The previous prime is 726057419. The next prime is 726057443. The reversal of 726057420 is 24750627.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1828662 + ... + 1829058.

It is an arithmetic number, because the mean of its divisors is an integer number (12336408).

Almost surely, 2^726057420 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 726057420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1184295168).

726057420 is an abundant number, since it is smaller than the sum of its proper divisors (1642532916).

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

726057420 is a wasteful number, since it uses less digits than its factorization.

726057420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 726057420 is about 26945.4526775855. The cubic root of 726057420 is about 898.7874287632.

The spelling of 726057420 in words is "seven hundred twenty-six million, fifty-seven thousand, four hundred twenty".