398211270 has 64 divisors (see below), whose sum is σ = 982618560. Its totient is φ = 103219200.

The previous prime is 398211263. The next prime is 398211283. The reversal of 398211270 is 72112893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517446 + ... + 518214.

It is an arithmetic number, because the mean of its divisors is an integer number (15353415).

Almost surely, 2^398211270 is an apocalyptic number.

398211270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 398211270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491309280).

398211270 is an abundant number, since it is smaller than the sum of its proper divisors (584407290).

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

398211270 is a wasteful number, since it uses less digits than its factorization.

398211270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 398211270 is about 19955.2316448595. The cubic root of 398211270 is about 735.7063689187.

The spelling of 398211270 in words is "three hundred ninety-eight million, two hundred eleven thousand, two hundred seventy".