308200140 has 360 divisors, whose sum is σ = 1115275392. Its totient is φ = 70917120.

The previous prime is 308200133. The next prime is 308200153. The reversal of 308200140 is 41002803.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 9941925 + ... + 9941955.

Almost surely, 2^308200140 is an apocalyptic number.

308200140 is a gapful number since it is divisible by the number (30) 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 308200140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557637696).

308200140 is an abundant number, since it is smaller than the sum of its proper divisors (807075252).

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

308200140 is a wasteful number, since it uses less digits than its factorization.

308200140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 308200140 is about 17555.6298662281. The cubic root of 308200140 is about 675.4775879348.

Adding to 308200140 its reverse (41002803), we get a palindrome (349202943).

The spelling of 308200140 in words is "three hundred eight million, two hundred thousand, one hundred forty".