213653000 has 64 divisors (see below), whose sum is σ = 545425920. Its totient is φ = 77688000.

The previous prime is 213652997. The next prime is 213653021. The reversal of 213653000 is 356312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1289 + ... + 20711.

It is an arithmetic number, because the mean of its divisors is an integer number (8522280).

Almost surely, 2^213653000 is an apocalyptic number.

213653000 is a gapful number since it is divisible by the number (20) 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 213653000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272712960).

213653000 is an abundant number, since it is smaller than the sum of its proper divisors (331772920).

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

213653000 is a wasteful number, since it uses less digits than its factorization.

213653000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19455 (or 19441 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 213653000 is about 14616.8738107709. The cubic root of 213653000 is about 597.8189330369.

The spelling of 213653000 in words is "two hundred thirteen million, six hundred fifty-three thousand".