405871452 has 48 divisors (see below), whose sum is σ = 1202584320. Its totient is φ = 115963056.

The previous prime is 405871441. The next prime is 405871457. The reversal of 405871452 is 254178504.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405871457) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 267678 + ... + 269189.

It is an arithmetic number, because the mean of its divisors is an integer number (25053840).

Almost surely, 2^405871452 is an apocalyptic number.

405871452 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

405871452 is an abundant number, since it is smaller than the sum of its proper divisors (796712868).

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

405871452 is a wasteful number, since it uses less digits than its factorization.

405871452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536887 (or 536879 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 405871452 is about 20146.2515620152. The cubic root of 405871452 is about 740.3939052111.

The spelling of 405871452 in words is "four hundred five million, eight hundred seventy-one thousand, four hundred fifty-two".