405086740 has 12 divisors (see below), whose sum is σ = 850682196. Its totient is φ = 162034688.

The previous prime is 405086711. The next prime is 405086777. The reversal of 405086740 is 47680504.

It can be written as a sum of positive squares in 2 ways, for example, as 124055044 + 281031696 = 11138^2 + 16764^2 .

It is a junction number, because it is equal to n+sod(n) for n = 405086696 and 405086705.

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, 10127149 + ... + 10127188.

It is an arithmetic number, because the mean of its divisors is an integer number (70890183).

Almost surely, 2^405086740 is an apocalyptic number.

It is an amenable number.

405086740 is an abundant number, since it is smaller than the sum of its proper divisors (445595456).

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

405086740 is a wasteful number, since it uses less digits than its factorization.

405086740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20254346 (or 20254344 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 405086740 is about 20126.7667547473. The cubic root of 405086740 is about 739.9164380930.

The spelling of 405086740 in words is "four hundred five million, eighty-six thousand, seven hundred forty".