304451940 has 48 divisors (see below), whose sum is σ = 918042048. Its totient is φ = 74941824.

The previous prime is 304451887. The next prime is 304451941. The reversal of 304451940 is 49154403.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 304451898 and 304451907.

It is not an unprimeable number, because it can be changed into a prime (304451941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194382 + ... + 195941.

It is an arithmetic number, because the mean of its divisors is an integer number (19125876).

Almost surely, 2^304451940 is an apocalyptic number.

304451940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

304451940 is an abundant number, since it is smaller than the sum of its proper divisors (613590108).

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

304451940 is a wasteful number, since it uses less digits than its factorization.

304451940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390348 (or 390346 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 304451940 is about 17448.5512292568. The cubic root of 304451940 is about 672.7281205802.

It can be divided in two parts, 30445 and 1940, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 304451940 in words is "three hundred four million, four hundred fifty-one thousand, nine hundred forty".