306940830 has 32 divisors (see below), whose sum is σ = 841895424. Its totient is φ = 70157856.

The previous prime is 306940813. The next prime is 306940847. The reversal of 306940830 is 38049603.

It is an interprime number because it is at equal distance from previous prime (306940813) and next prime (306940847).

It is a junction number, because it is equal to n+sod(n) for n = 306940791 and 306940800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730602 + ... + 731021.

It is an arithmetic number, because the mean of its divisors is an integer number (26309232).

Almost surely, 2^306940830 is an apocalyptic number.

306940830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

306940830 is an abundant number, since it is smaller than the sum of its proper divisors (534954594).

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

306940830 is a wasteful number, since it uses less digits than its factorization.

306940830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461640.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 306940830 is about 17519.7268814328. The cubic root of 306940830 is about 674.5563284700.

It can be divided in two parts, 30 and 6940830, that multiplied together give a square (208224900 = 14430²).

The spelling of 306940830 in words is "three hundred six million, nine hundred forty thousand, eight hundred thirty".