307801812 has 12 divisors (see below), whose sum is σ = 718204256. Its totient is φ = 102600600.

The previous prime is 307801751. The next prime is 307801817. The reversal of 307801812 is 218108703.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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 self number, because there is not a number n which added to its sum of digits gives 307801812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307801817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12825064 + ... + 12825087.

Almost surely, 2^307801812 is an apocalyptic number.

It is an amenable number.

307801812 is an abundant number, since it is smaller than the sum of its proper divisors (410402444).

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

307801812 is a wasteful number, since it uses less digits than its factorization.

307801812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25650158 (or 25650156 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 307801812 is about 17544.2814614905. The cubic root of 307801812 is about 675.1864593252.

The spelling of 307801812 in words is "three hundred seven million, eight hundred one thousand, eight hundred twelve".