405028006 has 4 divisors (see below), whose sum is σ = 607542012. Its totient is φ = 202514002.

The previous prime is 405028003. The next prime is 405028021. The reversal of 405028006 is 600820504.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405028003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101257000 + ... + 101257003.

It is an arithmetic number, because the mean of its divisors is an integer number (151885503).

Almost surely, 2^405028006 is an apocalyptic number.

405028006 is a deficient number, since it is larger than the sum of its proper divisors (202514006).

405028006 is a wasteful number, since it uses less digits than its factorization.

405028006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202514005.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 405028006 is about 20125.3076001337. The cubic root of 405028006 is about 739.8806759148.

The spelling of 405028006 in words is "four hundred five million, twenty-eight thousand, six".