405002072 has 16 divisors (see below), whose sum is σ = 762698400. Its totient is φ = 201615840.

The previous prime is 405002047. The next prime is 405002093. The reversal of 405002072 is 270200504.

It is a congruent number.

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, 108704 + ... + 112367.

It is an arithmetic number, because the mean of its divisors is an integer number (47668650).

Almost surely, 2^405002072 is an apocalyptic number.

It is an amenable number.

405002072 is a deficient number, since it is larger than the sum of its proper divisors (357696328).

405002072 is a wasteful number, since it uses less digits than its factorization.

405002072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221306 (or 221302 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 405002072 is about 20124.6632766861. The cubic root of 405002072 is about 739.8648840233.

Adding to 405002072 its reverse (270200504), we get a palindrome (675202576).

The spelling of 405002072 in words is "four hundred five million, two thousand, seventy-two".