398573239680 has 1280 divisors, whose sum is σ = 1832413777920. Its totient is φ = 80123904000.

The previous prime is 398573239667. The next prime is 398573239699. The reversal of 398573239680 is 86932375893.

398573239680 is a `hidden beast` number, since 3 + 98 + 57 + 32 + 396 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 123740470 + ... + 123743690.

It is an arithmetic number, because the mean of its divisors is an integer number (1431573264).

Almost surely, 2^398573239680 is an apocalyptic number.

398573239680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398573239680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916206888960).

398573239680 is an abundant number, since it is smaller than the sum of its proper divisors (1433840538240).

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

398573239680 is a wasteful number, since it uses less digits than its factorization.

398573239680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 398573239680 in words is "three hundred ninety-eight billion, five hundred seventy-three million, two hundred thirty-nine thousand, six hundred eighty".