308402226 has 48 divisors (see below), whose sum is σ = 731203200. Its totient is φ = 93166560.

The previous prime is 308402221. The next prime is 308402261. The reversal of 308402226 is 622204803.

308402226 is a `hidden beast` number, since 30 + 8 + 402 + 226 = 666.

308402226 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×308402226² = 190223866003510152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 308402226.

It is not an unprimeable number, because it can be changed into a prime (308402221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66871 + ... + 71333.

It is an arithmetic number, because the mean of its divisors is an integer number (15233400).

Almost surely, 2^308402226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308402226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365601600).

308402226 is an abundant number, since it is smaller than the sum of its proper divisors (422800974).

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

308402226 is a wasteful number, since it uses less digits than its factorization.

308402226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831 (or 4828 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 308402226 is about 17561.3845126174. The cubic root of 308402226 is about 675.6251919554.

The spelling of 308402226 in words is "three hundred eight million, four hundred two thousand, two hundred twenty-six".