405116580 has 48 divisors (see below), whose sum is σ = 1237449024. Its totient is φ = 98209920.

The previous prime is 405116563. The next prime is 405116581. The reversal of 405116580 is 85611504.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (405116581) 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, 306247 + ... + 307566.

It is an arithmetic number, because the mean of its divisors is an integer number (25780188).

Almost surely, 2^405116580 is an apocalyptic number.

It is an amenable number.

405116580 is an abundant number, since it is smaller than the sum of its proper divisors (832332444).

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

405116580 is a wasteful number, since it uses less digits than its factorization.

405116580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613836 (or 613834 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 405116580 is about 20127.5080424776. The cubic root of 405116580 is about 739.9346058599.

The spelling of 405116580 in words is "four hundred five million, one hundred sixteen thousand, five hundred eighty".