307420806 has 96 divisors (see below), whose sum is σ = 814364928. Its totient is φ = 76359360.

The previous prime is 307420801. The next prime is 307420807. The reversal of 307420806 is 608024703.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307420801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72316 + ... + 76448.

It is an arithmetic number, because the mean of its divisors is an integer number (8482968).

Almost surely, 2^307420806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307420806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407182464).

307420806 is an abundant number, since it is smaller than the sum of its proper divisors (506944122).

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

307420806 is a wasteful number, since it uses less digits than its factorization.

307420806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4186 (or 4179 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 307420806 is about 17533.4196892677. The cubic root of 307420806 is about 674.9077558446.

The spelling of 307420806 in words is "three hundred seven million, four hundred twenty thousand, eight hundred six".