405274812 has 24 divisors (see below), whose sum is σ = 986756736. Its totient is φ = 129217968.

The previous prime is 405274783. The next prime is 405274813. The reversal of 405274812 is 218472504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405274813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733918 + ... + 734469.

It is an arithmetic number, because the mean of its divisors is an integer number (41114864).

Almost surely, 2^405274812 is an apocalyptic number.

It is an amenable number.

405274812 is an abundant number, since it is smaller than the sum of its proper divisors (581481924).

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

405274812 is a wasteful number, since it uses less digits than its factorization.

405274812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468417 (or 1468415 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 405274812 is about 20131.4383986838. The cubic root of 405274812 is about 740.0309288266.

The spelling of 405274812 in words is "four hundred five million, two hundred seventy-four thousand, eight hundred twelve".