407855720240 has 40 divisors (see below), whose sum is σ = 950295181680. Its totient is φ = 162792932096.

The previous prime is 407855720227. The next prime is 407855720257. The reversal of 407855720240 is 42027558704.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 407855720191 and 407855720200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5421095 + ... + 5495814.

It is an arithmetic number, because the mean of its divisors is an integer number (23757379542).

Almost surely, 2^407855720240 is an apocalyptic number.

407855720240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

407855720240 is an abundant number, since it is smaller than the sum of its proper divisors (542439461440).

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

407855720240 is a wasteful number, since it uses less digits than its factorization.

407855720240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10917389 (or 10917383 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 44.

The spelling of 407855720240 in words is "four hundred seven billion, eight hundred fifty-five million, seven hundred twenty thousand, two hundred forty".