308147420 has 48 divisors (see below), whose sum is σ = 742703808. Its totient is φ = 105200640.

The previous prime is 308147401. The next prime is 308147443. The reversal of 308147420 is 24741803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29174 + ... + 38306.

It is an arithmetic number, because the mean of its divisors is an integer number (15472996).

Almost surely, 2^308147420 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 308147420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371351904).

308147420 is an abundant number, since it is smaller than the sum of its proper divisors (434556388).

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

308147420 is a wasteful number, since it uses less digits than its factorization.

308147420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9390 (or 9388 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 308147420 is about 17554.1282893797. The cubic root of 308147420 is about 675.4390705294.

The spelling of 308147420 in words is "three hundred eight million, one hundred forty-seven thousand, four hundred twenty".