302780412 has 72 divisors (see below), whose sum is σ = 841185072. Its totient is φ = 91065600.

The previous prime is 302780411. The next prime is 302780417. The reversal of 302780412 is 214087203.

302780412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302780411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51462 + ... + 57042.

It is an arithmetic number, because the mean of its divisors is an integer number (11683126).

Almost surely, 2^302780412 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 302780412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420592536).

302780412 is an abundant number, since it is smaller than the sum of its proper divisors (538404660).

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

302780412 is a wasteful number, since it uses less digits than its factorization.

302780412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739 (or 5734 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 302780412 is about 17400.5865418382. The cubic root of 302780412 is about 671.4947041200.

The spelling of 302780412 in words is "three hundred two million, seven hundred eighty thousand, four hundred twelve".