213458500 has 24 divisors (see below), whose sum is σ = 466194456. Its totient is φ = 85383200.

The previous prime is 213458461. The next prime is 213458501. The reversal of 213458500 is 5854312.

It can be written as a sum of positive squares in 4 ways, for example, as 16112196 + 197346304 = 4014^2 + 14048^2 .

It is not an unprimeable number, because it can be changed into a prime (213458501) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 212959 + ... + 213958.

It is an arithmetic number, because the mean of its divisors is an integer number (19424769).

Almost surely, 2^213458500 is an apocalyptic number.

213458500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213458500 is an abundant number, since it is smaller than the sum of its proper divisors (252735956).

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

213458500 is a wasteful number, since it uses less digits than its factorization.

213458500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426936 (or 426924 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 213458500 is about 14610.2190264212. The cubic root of 213458500 is about 597.6374688802.

The spelling of 213458500 in words is "two hundred thirteen million, four hundred fifty-eight thousand, five hundred".