208029140 has 24 divisors (see below), whose sum is σ = 476576352. Its totient is φ = 75646880.

The previous prime is 208029139. The next prime is 208029149. The reversal of 208029140 is 41920802.

It is a super-2 number, since 2×208029140² = 86552246178279200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208029149) 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, 472574 + ... + 473013.

It is an arithmetic number, because the mean of its divisors is an integer number (19857348).

Almost surely, 2^208029140 is an apocalyptic number.

208029140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208029140 is an abundant number, since it is smaller than the sum of its proper divisors (268547212).

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

208029140 is a wasteful number, since it uses less digits than its factorization.

208029140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945607 (or 945605 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 208029140 is about 14423.2153142079. The cubic root of 208029140 is about 592.5268813431.

Adding to 208029140 its reverse (41920802), we get a palindrome (249949942).

The spelling of 208029140 in words is "two hundred eight million, twenty-nine thousand, one hundred forty".