307497040 has 20 divisors (see below), whose sum is σ = 714930804. Its totient is φ = 122998784.

The previous prime is 307497031. The next prime is 307497059. The reversal of 307497040 is 40794703.

It can be written as a sum of positive squares in 2 ways, for example, as 102090816 + 205406224 = 10104^2 + 14332^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 307496987 and 307497005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1921777 + ... + 1921936.

Almost surely, 2^307497040 is an apocalyptic number.

It is an amenable number.

307497040 is an abundant number, since it is smaller than the sum of its proper divisors (407433764).

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

307497040 is a wasteful number, since it uses less digits than its factorization.

307497040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3843726 (or 3843720 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 307497040 is about 17535.5935171867. The cubic root of 307497040 is about 674.9635389542.

The spelling of 307497040 in words is "three hundred seven million, four hundred ninety-seven thousand, forty".