398920710720 has 1008 divisors, whose sum is σ = 1625710296960. Its totient is φ = 81158602752.

The previous prime is 398920710659. The next prime is 398920710743. The reversal of 398920710720 is 27017029893.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 398920710720.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 701090596 + ... + 701091164.

Almost surely, 2^398920710720 is an apocalyptic number.

398920710720 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 398920710720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812855148480).

398920710720 is an abundant number, since it is smaller than the sum of its proper divisors (1226789586240).

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

398920710720 is a wasteful number, since it uses less digits than its factorization.

398920710720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The spelling of 398920710720 in words is "three hundred ninety-eight billion, nine hundred twenty million, seven hundred ten thousand, seven hundred twenty".