405345052 has 24 divisors (see below), whose sum is σ = 827237600. Its totient is φ = 173718720.

The previous prime is 405345037. The next prime is 405345089. The reversal of 405345052 is 250543504.

It is a super-2 number, since 2×405345052² = 328609222361765408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 405345052.

It is a congruent number.

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, 146349 + ... + 149092.

Almost surely, 2^405345052 is an apocalyptic number.

It is an amenable number.

405345052 is an abundant number, since it is smaller than the sum of its proper divisors (421892548).

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

405345052 is a wasteful number, since it uses less digits than its factorization.

405345052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295466 (or 295450 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 405345052 is about 20133.1828581573. The cubic root of 405345052 is about 740.0736790529.

Adding to 405345052 its reverse (250543504), we get a palindrome (655888556).

The spelling of 405345052 in words is "four hundred five million, three hundred forty-five thousand, fifty-two".