308720214 has 128 divisors (see below), whose sum is σ = 796262400. Its totient is φ = 87737760.

The previous prime is 308720213. The next prime is 308720249. The reversal of 308720214 is 412027803.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308720213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 805867 + ... + 806249.

It is an arithmetic number, because the mean of its divisors is an integer number (6220800).

Almost surely, 2^308720214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308720214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398131200).

308720214 is an abundant number, since it is smaller than the sum of its proper divisors (487542186).

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

308720214 is a wasteful number, since it uses less digits than its factorization.

308720214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 308720214 is about 17570.4357942539. The cubic root of 308720214 is about 675.8573205289.

The spelling of 308720214 in words is "three hundred eight million, seven hundred twenty thousand, two hundred fourteen".