405422540 has 24 divisors (see below), whose sum is σ = 852023760. Its totient is φ = 162047808.

The previous prime is 405422503. The next prime is 405422569. The reversal of 405422540 is 45224504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22826 + ... + 36494.

It is an arithmetic number, because the mean of its divisors is an integer number (35500990).

Almost surely, 2^405422540 is an apocalyptic number.

It is an amenable number.

405422540 is an abundant number, since it is smaller than the sum of its proper divisors (446601220).

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

405422540 is a wasteful number, since it uses less digits than its factorization.

405422540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15161 (or 15159 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 405422540 is about 20135.1071514407. The cubic root of 405422540 is about 740.1208349062.

The spelling of 405422540 in words is "four hundred five million, four hundred twenty-two thousand, five hundred forty".