405897032 has 36 divisors (see below), whose sum is σ = 810392505. Its totient is φ = 190554496.

The previous prime is 405897013. The next prime is 405897047. The reversal of 405897032 is 230798504.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 371487076 + 34409956 = 19274^2 + 5866^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=14246.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 968519 + ... + 968937.

Almost surely, 2^405897032 is an apocalyptic number.

It is an amenable number.

405897032 is a deficient number, since it is larger than the sum of its proper divisors (404495473).

405897032 is an equidigital number, since it uses as much as digits as its factorization.

405897032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 405897032 is about 20146.8864095671. The cubic root of 405897032 is about 740.4094592969.

The spelling of 405897032 in words is "four hundred five million, eight hundred ninety-seven thousand, thirty-two".