405252708 has 48 divisors (see below), whose sum is σ = 1115541504. Its totient is φ = 112050720.

The previous prime is 405252637. The next prime is 405252781. The reversal of 405252708 is 807252504.

It is an unprimeable number.

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, 75210 + ... + 80417.

It is an arithmetic number, because the mean of its divisors is an integer number (23240448).

Almost surely, 2^405252708 is an apocalyptic number.

It is an amenable number.

405252708 is an abundant number, since it is smaller than the sum of its proper divisors (710288796).

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

405252708 is a wasteful number, since it uses less digits than its factorization.

405252708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155672 (or 155670 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 405252708 is about 20130.8893991299. The cubic root of 405252708 is about 740.0174746300.

The spelling of 405252708 in words is "four hundred five million, two hundred fifty-two thousand, seven hundred eight".