405428450 has 72 divisors (see below), whose sum is σ = 884800512. Its totient is φ = 137803680.

The previous prime is 405428449. The next prime is 405428453. The reversal of 405428450 is 54824504.

It is not an unprimeable number, because it can be changed into a prime (405428453) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 310499 + ... + 311801.

It is an arithmetic number, because the mean of its divisors is an integer number (12288896).

Almost surely, 2^405428450 is an apocalyptic number.

405428450 is an abundant number, since it is smaller than the sum of its proper divisors (479372062).

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

405428450 is a wasteful number, since it uses less digits than its factorization.

405428450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 405428450 is about 20135.2539094991. The cubic root of 405428450 is about 740.1244312305.

The spelling of 405428450 in words is "four hundred five million, four hundred twenty-eight thousand, four hundred fifty".