405248016 has 20 divisors (see below), whose sum is σ = 1046890832. Its totient is φ = 135082656.

The previous prime is 405248009. The next prime is 405248029. The reversal of 405248016 is 610842504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4221286 + ... + 4221381.

Almost surely, 2^405248016 is an apocalyptic number.

It is an amenable number.

405248016 is an abundant number, since it is smaller than the sum of its proper divisors (641642816).

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

405248016 is a wasteful number, since it uses less digits than its factorization.

405248016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442678 (or 8442672 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 405248016 is about 20130.7728614676. The cubic root of 405248016 is about 740.0146186545.

The spelling of 405248016 in words is "four hundred five million, two hundred forty-eight thousand, sixteen".