398658344280 has 512 divisors, whose sum is σ = 1526153011200. Its totient is φ = 81101316096.

The previous prime is 398658344269. The next prime is 398658344281. The reversal of 398658344280 is 82443856893.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398658344281) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 213527907 + ... + 213529773.

It is an arithmetic number, because the mean of its divisors is an integer number (2980767600).

Almost surely, 2^398658344280 is an apocalyptic number.

398658344280 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 398658344280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763076505600).

398658344280 is an abundant number, since it is smaller than the sum of its proper divisors (1127494666920).

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

398658344280 is a wasteful number, since it uses less digits than its factorization.

398658344280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 60.

The spelling of 398658344280 in words is "three hundred ninety-eight billion, six hundred fifty-eight million, three hundred forty-four thousand, two hundred eighty".