307940940 has 120 divisors (see below), whose sum is σ = 970458720. Its totient is φ = 81741312.

The previous prime is 307940929. The next prime is 307940947. The reversal of 307940940 is 49049703.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 307940895 and 307940904.

It is not an unprimeable number, because it can be changed into a prime (307940947) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 701241 + ... + 701679.

It is an arithmetic number, because the mean of its divisors is an integer number (8087156).

Almost surely, 2^307940940 is an apocalyptic number.

307940940 is a gapful number since it is divisible by the number (30) 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 307940940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485229360).

307940940 is an abundant number, since it is smaller than the sum of its proper divisors (662517780).

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

307940940 is a wasteful number, since it uses less digits than its factorization.

307940940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 307940940 is about 17548.2460662027. The cubic root of 307940940 is about 675.2881732509.

The spelling of 307940940 in words is "three hundred seven million, nine hundred forty thousand, nine hundred forty".