394548020 has 48 divisors (see below), whose sum is σ = 856426368. Its totient is φ = 152565120.

The previous prime is 394548017. The next prime is 394548023. The reversal of 394548020 is 20845493.

It is an interprime number because it is at equal distance from previous prime (394548017) and next prime (394548023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394548023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118985 + ... + 122255.

It is an arithmetic number, because the mean of its divisors is an integer number (17842216).

Almost surely, 2^394548020 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 394548020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428213184).

394548020 is an abundant number, since it is smaller than the sum of its proper divisors (461878348).

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

394548020 is a wasteful number, since it uses less digits than its factorization.

394548020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480 (or 3478 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 394548020 is about 19863.2328687956. The cubic root of 394548020 is about 733.4434302102.

It can be divided in two parts, 39454 and 8020, that added together give a palindrome (47474).

The spelling of 394548020 in words is "three hundred ninety-four million, five hundred forty-eight thousand, twenty".