305866740 has 96 divisors (see below), whose sum is σ = 885620736. Its totient is φ = 78825600.

The previous prime is 305866727. The next prime is 305866817. The reversal of 305866740 is 47668503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265165 + ... + 266315.

It is an arithmetic number, because the mean of its divisors is an integer number (9225216).

Almost surely, 2^305866740 is an apocalyptic number.

305866740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305866740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442810368).

305866740 is an abundant number, since it is smaller than the sum of its proper divisors (579753996).

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

305866740 is a wasteful number, since it uses less digits than its factorization.

305866740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 305866740 is about 17489.0462861758. The cubic root of 305866740 is about 673.7685751388.

The spelling of 305866740 in words is "three hundred five million, eight hundred sixty-six thousand, seven hundred forty".