307240032 has 96 divisors (see below), whose sum is σ = 926190720. Its totient is φ = 88197120.

The previous prime is 307240027. The next prime is 307240033. The reversal of 307240032 is 230042703.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×307240032² = 188792874526722048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 307239990 and 307240008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307240033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12408 + ... + 27720.

It is an arithmetic number, because the mean of its divisors is an integer number (9647820).

Almost surely, 2^307240032 is an apocalyptic number.

307240032 is a gapful number since it is divisible by the number (32) 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 307240032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463095360).

307240032 is an abundant number, since it is smaller than the sum of its proper divisors (618950688).

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

307240032 is a wasteful number, since it uses less digits than its factorization.

307240032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15356 (or 15348 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 307240032 is about 17528.2638044959. The cubic root of 307240032 is about 674.7754402535.

Adding to 307240032 its reverse (230042703), we get a palindrome (537282735).

The spelling of 307240032 in words is "three hundred seven million, two hundred forty thousand, thirty-two".