305690004 has 96 divisors (see below), whose sum is σ = 819960960. Its totient is φ = 98413056.

The previous prime is 305689999. The next prime is 305690009. The reversal of 305690004 is 400096503.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (305689999) and next prime (305690009).

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 305690004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305690009) 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 31 ways as a sum of consecutive naturals, for example, 906924 + ... + 907260.

It is an arithmetic number, because the mean of its divisors is an integer number (8541260).

Almost surely, 2^305690004 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 305690004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409980480).

305690004 is an abundant number, since it is smaller than the sum of its proper divisors (514270956).

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

305690004 is a wasteful number, since it uses less digits than its factorization.

305690004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 305690004 is about 17483.9927934096. The cubic root of 305690004 is about 673.6387777574.

The spelling of 305690004 in words is "three hundred five million, six hundred ninety thousand, four".