398826156220 has 24 divisors (see below), whose sum is σ = 838345750704. Its totient is φ = 159376020096.

The previous prime is 398826156173. The next prime is 398826156221. The reversal of 398826156220 is 22651628893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398826156221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9631474 + ... + 9672793.

It is an arithmetic number, because the mean of its divisors is an integer number (34931072946).

Almost surely, 2^398826156220 is an apocalyptic number.

It is an amenable number.

398826156220 is an abundant number, since it is smaller than the sum of its proper divisors (439519594484).

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

398826156220 is a wasteful number, since it uses less digits than its factorization.

398826156220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19305309 (or 19305307 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 398826156220 in words is "three hundred ninety-eight billion, eight hundred twenty-six million, one hundred fifty-six thousand, two hundred twenty".