307421040 has 40 divisors (see below), whose sum is σ = 953005968. Its totient is φ = 81978880.

The previous prime is 307421039. The next prime is 307421057. The reversal of 307421040 is 40124703.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 307420998 and 307421016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640221 + ... + 640700.

Almost surely, 2^307421040 is an apocalyptic number.

307421040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

307421040 is an abundant number, since it is smaller than the sum of its proper divisors (645584928).

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

307421040 is a wasteful number, since it uses less digits than its factorization.

307421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280937 (or 1280931 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 307421040 is about 17533.4263622374. The cubic root of 307421040 is about 674.9079270848.

Adding to 307421040 its reverse (40124703), we get a palindrome (347545743).

The spelling of 307421040 in words is "three hundred seven million, four hundred twenty-one thousand, forty".