213998424 has 64 divisors (see below), whose sum is σ = 555660000. Its totient is φ = 68597760.

The previous prime is 213998399. The next prime is 213998441. The reversal of 213998424 is 424899312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242464 + ... + 243344.

Almost surely, 2^213998424 is an apocalyptic number.

213998424 is a gapful number since it is divisible by the number (24) 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 213998424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277830000).

213998424 is an abundant number, since it is smaller than the sum of its proper divisors (341661576).

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

213998424 is a wasteful number, since it uses less digits than its factorization.

213998424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268 (or 1264 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 213998424 is about 14628.6849716576. The cubic root of 213998424 is about 598.1409346314.

The spelling of 213998424 in words is "two hundred thirteen million, nine hundred ninety-eight thousand, four hundred twenty-four".