578198340 has 36 divisors (see below), whose sum is σ = 1753868844. Its totient is φ = 154186176.

The previous prime is 578198333. The next prime is 578198347. The reversal of 578198340 is 43891875.

It is an interprime number because it is at equal distance from previous prime (578198333) and next prime (578198347).

It can be written as a sum of positive squares in 2 ways, for example, as 412252416 + 165945924 = 20304^2 + 12882^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (578198347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1605927 + ... + 1606286.

It is an arithmetic number, because the mean of its divisors is an integer number (48718579).

Almost surely, 2^578198340 is an apocalyptic number.

It is an amenable number.

578198340 is an abundant number, since it is smaller than the sum of its proper divisors (1175670504).

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

578198340 is a wasteful number, since it uses less digits than its factorization.

578198340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212228 (or 3212223 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 578198340 is about 24045.7551347426. The cubic root of 578198340 is about 833.0906881104.

The spelling of 578198340 in words is "five hundred seventy-eight million, one hundred ninety-eight thousand, three hundred forty".