149781306 has 8 divisors (see below), whose sum is σ = 299562624. Its totient is φ = 49927100.

The previous prime is 149781299. The next prime is 149781311. The reversal of 149781306 is 603187941.

149781306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

149781306 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12481770 + ... + 12481781.

It is an arithmetic number, because the mean of its divisors is an integer number (37445328).

Almost surely, 2^149781306 is an apocalyptic number.

149781306 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.

149781306 is a wasteful number, since it uses less digits than its factorization.

149781306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24963556.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 149781306 is about 12238.5173121584. The cubic root of 149781306 is about 531.0709400507.

The spelling of 149781306 in words is "one hundred forty-nine million, seven hundred eighty-one thousand, three hundred six".