578349720 has 384 divisors, whose sum is σ = 2201472000. Its totient is φ = 135489024.

The previous prime is 578349713. The next prime is 578349767. The reversal of 578349720 is 27943875.

578349720 is a `hidden beast` number, since 578 + 3 + 4 + 9 + 72 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2906181 + ... + 2906379.

It is an arithmetic number, because the mean of its divisors is an integer number (5733000).

Almost surely, 2^578349720 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 578349720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100736000).

578349720 is an abundant number, since it is smaller than the sum of its proper divisors (1623122280).

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

578349720 is a wasteful number, since it uses less digits than its factorization.

578349720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 578349720 is about 24048.9026776691. The cubic root of 578349720 is about 833.1633864996.

The spelling of 578349720 in words is "five hundred seventy-eight million, three hundred forty-nine thousand, seven hundred twenty".