306402426 has 80 divisors (see below), whose sum is σ = 754981920. Its totient is φ = 92106720.

The previous prime is 306402403. The next prime is 306402427. The reversal of 306402426 is 624204603.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 306402426.

It is not an unprimeable number, because it can be changed into a prime (306402427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 247080 + ... + 248316.

It is an arithmetic number, because the mean of its divisors is an integer number (9437274).

Almost surely, 2^306402426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306402426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377490960).

306402426 is an abundant number, since it is smaller than the sum of its proper divisors (448579494).

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

306402426 is a wasteful number, since it uses less digits than its factorization.

306402426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1392 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 306402426 is about 17504.3544868127. The cubic root of 306402426 is about 674.1616852137.

It can be divided in two parts, 3064024 and 26, that added together give a triangular number (3064050 = T₂₄₇₅).

The spelling of 306402426 in words is "three hundred six million, four hundred two thousand, four hundred twenty-six".