304899840 has 432 divisors, whose sum is σ = 1275456000. Its totient is φ = 65691648.

The previous prime is 304899827. The next prime is 304899851. The reversal of 304899840 is 48998403.

It is a happy number.

304899840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1532061 + ... + 1532259.

Almost surely, 2^304899840 is an apocalyptic number.

304899840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304899840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637728000).

304899840 is an abundant number, since it is smaller than the sum of its proper divisors (970556160).

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

304899840 is a wasteful number, since it uses less digits than its factorization.

304899840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 304899840 is about 17461.3813886531. The cubic root of 304899840 is about 673.0578576636.

The spelling of 304899840 in words is "three hundred four million, eight hundred ninety-nine thousand, eight hundred forty".