306929740 has 48 divisors (see below), whose sum is σ = 708930432. Its totient is φ = 110912256.

The previous prime is 306929737. The next prime is 306929771. The reversal of 306929740 is 47929603.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 306929693 and 306929702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339 + ... + 24778.

It is an arithmetic number, because the mean of its divisors is an integer number (14769384).

Almost surely, 2^306929740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306929740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354465216).

306929740 is an abundant number, since it is smaller than the sum of its proper divisors (402000692).

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

306929740 is a wasteful number, since it uses less digits than its factorization.

306929740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25186 (or 25184 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 306929740 is about 17519.4103782062. The cubic root of 306929740 is about 674.5482042985.

The spelling of 306929740 in words is "three hundred six million, nine hundred twenty-nine thousand, seven hundred forty".