308412 has 36 divisors (see below), whose sum is σ = 840840. Its totient is φ = 94752.

The previous prime is 308411. The next prime is 308423. The reversal of 308412 is 214803.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139 + ... + 797.

2³⁰⁸⁴¹² 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 308412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420420).

308412 is an abundant number, since it is smaller than the sum of its proper divisors (532428).

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

308412 is a wasteful number, since it uses less digits than its factorization.

308412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 308412 is about 555.3485392076. The cubic root of 308412 is about 67.5632329270.

The spelling of 308412 in words is "three hundred eight thousand, four hundred twelve".