309230460 has 480 divisors, whose sum is σ = 1260661248. Its totient is φ = 61585920.

The previous prime is 309230443. The next prime is 309230473. The reversal of 309230460 is 64032903.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 4615347 + ... + 4615413.

Almost surely, 2^309230460 is an apocalyptic number.

309230460 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 309230460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630330624).

309230460 is an abundant number, since it is smaller than the sum of its proper divisors (951430788).

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

309230460 is a wasteful number, since it uses less digits than its factorization.

309230460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 309230460 is about 17584.9498151118. The cubic root of 309230460 is about 676.2294629675.

The spelling of 309230460 in words is "three hundred nine million, two hundred thirty thousand, four hundred sixty".