307190840 has 64 divisors (see below), whose sum is σ = 756984960. Its totient is φ = 111265920.

The previous prime is 307190827. The next prime is 307190951. The reversal of 307190840 is 48091703.

307190840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 307190797 and 307190806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123287 + ... + 125753.

It is an arithmetic number, because the mean of its divisors is an integer number (11827890).

Almost surely, 2^307190840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307190840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378492480).

307190840 is an abundant number, since it is smaller than the sum of its proper divisors (449794120).

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

307190840 is a wasteful number, since it uses less digits than its factorization.

307190840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772 (or 2768 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 307190840 is about 17526.8605289139. The cubic root of 307190840 is about 674.7394257136.

The spelling of 307190840 in words is "three hundred seven million, one hundred ninety thousand, eight hundred forty".