308190066 has 8 divisors (see below), whose sum is σ = 616380144. Its totient is φ = 102730020.

The previous prime is 308190061. The next prime is 308190097. The reversal of 308190066 is 660091803.

It is a sphenic number, since it is the product of 3 distinct primes.

308190066 is an admirable number.

It is a super-2 number, since 2×308190066² = 189962233562168712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (308190061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25682500 + ... + 25682511.

It is an arithmetic number, because the mean of its divisors is an integer number (77047518).

Almost surely, 2^308190066 is an apocalyptic number.

308190066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

308190066 is a wasteful number, since it uses less digits than its factorization.

308190066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51365016.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 308190066 is about 17555.3429473764. The cubic root of 308190066 is about 675.4702281767.

The spelling of 308190066 in words is "three hundred eight million, one hundred ninety thousand, sixty-six".