405347120 has 20 divisors (see below), whose sum is σ = 942432240. Its totient is φ = 162138816.

The previous prime is 405347113. The next prime is 405347141. The reversal of 405347120 is 21743504.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 405347120.

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 3 ways as a sum of consecutive naturals, for example, 2533340 + ... + 2533499.

It is an arithmetic number, because the mean of its divisors is an integer number (47121612).

Almost surely, 2^405347120 is an apocalyptic number.

405347120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405347120 is an abundant number, since it is smaller than the sum of its proper divisors (537085120).

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

405347120 is a wasteful number, since it uses less digits than its factorization.

405347120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066852 (or 5066846 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 405347120 is about 20133.2342160916. The cubic root of 405347120 is about 740.0749376265.

The spelling of 405347120 in words is "four hundred five million, three hundred forty-seven thousand, one hundred twenty".