308222250 has 96 divisors (see below), whose sum is σ = 895033152. Its totient is φ = 70442400.

The previous prime is 308222231. The next prime is 308222251. The reversal of 308222250 is 52222803.

It is a self number, because there is not a number n which added to its sum of digits gives 308222250.

It is not an unprimeable number, because it can be changed into a prime (308222251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32557 + ... + 40943.

It is an arithmetic number, because the mean of its divisors is an integer number (9323262).

Almost surely, 2^308222250 is an apocalyptic number.

308222250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 308222250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447516576).

308222250 is an abundant number, since it is smaller than the sum of its proper divisors (586810902).

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

308222250 is a wasteful number, since it uses less digits than its factorization.

308222250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8421 (or 8404 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 308222250 is about 17556.2595674591. The cubic root of 308222250 is about 675.4937402661.

The spelling of 308222250 in words is "three hundred eight million, two hundred twenty-two thousand, two hundred fifty".