406022280 has 32 divisors (see below), whose sum is σ = 1218067200. Its totient is φ = 108272576.

The previous prime is 406022273. The next prime is 406022329. The reversal of 406022280 is 82220604.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 406022280.

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, 1691640 + ... + 1691879.

It is an arithmetic number, because the mean of its divisors is an integer number (38064600).

Almost surely, 2^406022280 is an apocalyptic number.

406022280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406022280 is an abundant number, since it is smaller than the sum of its proper divisors (812044920).

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

406022280 is a wasteful number, since it uses less digits than its factorization.

406022280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383533 (or 3383529 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 406022280 is about 20149.9945409422. The cubic root of 406022280 is about 740.4856077286.

Adding to 406022280 its reverse (82220604), we get a palindrome (488242884).

The spelling of 406022280 in words is "four hundred six million, twenty-two thousand, two hundred eighty".