306471540 has 48 divisors (see below), whose sum is σ = 866158272. Its totient is φ = 80960256.

The previous prime is 306471523. The next prime is 306471541. The reversal of 306471540 is 45174603.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 306471498 and 306471507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306471541) by changing a digit.

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, 17449 + ... + 30288.

It is an arithmetic number, because the mean of its divisors is an integer number (18044964).

Almost surely, 2^306471540 is an apocalyptic number.

306471540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

306471540 is an abundant number, since it is smaller than the sum of its proper divisors (559686732).

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

306471540 is a wasteful number, since it uses less digits than its factorization.

306471540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47856 (or 47854 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 306471540 is about 17506.3285699772. The cubic root of 306471540 is about 674.2123707434.

The spelling of 306471540 in words is "three hundred six million, four hundred seventy-one thousand, five hundred forty".