405502026 has 8 divisors (see below), whose sum is σ = 811004064. Its totient is φ = 135167340.

The previous prime is 405502007. The next prime is 405502033. The reversal of 405502026 is 620205504.

It is a sphenic number, since it is the product of 3 distinct primes.

405502026 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 405501987 and 405502005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33791830 + ... + 33791841.

It is an arithmetic number, because the mean of its divisors is an integer number (101375508).

Almost surely, 2^405502026 is an apocalyptic number.

405502026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

405502026 is a wasteful number, since it uses less digits than its factorization.

405502026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67583676.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 405502026 is about 20137.0808708710. The cubic root of 405502026 is about 740.1692004135.

The spelling of 405502026 in words is "four hundred five million, five hundred two thousand, twenty-six".