320000407740 has 72 divisors (see below), whose sum is σ = 1045334672928. Its totient is φ = 78769330560.

The previous prime is 320000407691. The next prime is 320000407757. The reversal of 320000407740 is 47704000023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68373816 + ... + 68378495.

It is an arithmetic number, because the mean of its divisors is an integer number (14518537124).

Almost surely, 2^320000407740 is an apocalyptic number.

320000407740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320000407740 is an abundant number, since it is smaller than the sum of its proper divisors (725334265188).

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

320000407740 is a wasteful number, since it uses less digits than its factorization.

320000407740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136752339 (or 136752334 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

Adding to 320000407740 its reverse (47704000023), we get a palindrome (367704407763).

The spelling of 320000407740 in words is "three hundred twenty billion, four hundred seven thousand, seven hundred forty".