208545000 has 80 divisors (see below), whose sum is σ = 651541440. Its totient is φ = 55608000.

The previous prime is 208544989. The next prime is 208545011. The reversal of 208545000 is 545802.

It is an interprime number because it is at equal distance from previous prime (208544989) and next prime (208545011).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 19 ways as a sum of consecutive naturals, for example, 8049 + ... + 21951.

It is an arithmetic number, because the mean of its divisors is an integer number (8144268).

Almost surely, 2^208545000 is an apocalyptic number.

208545000 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 208545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325770720).

208545000 is an abundant number, since it is smaller than the sum of its proper divisors (442996440).

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

208545000 is a wasteful number, since it uses less digits than its factorization.

208545000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13932 (or 13913 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 208545000 is about 14441.0872166884. The cubic root of 208545000 is about 593.0162496602.

The spelling of 208545000 in words is "two hundred eight million, five hundred forty-five thousand".