406220288 has 20 divisors (see below), whose sum is σ = 811648200. Its totient is φ = 203109888.

The previous prime is 406220279. The next prime is 406220317. The reversal of 406220288 is 882022604.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

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 as a sum of consecutive naturals, namely, 396188 + ... + 397211.

It is an arithmetic number, because the mean of its divisors is an integer number (40582410).

Almost surely, 2^406220288 is an apocalyptic number.

It is an amenable number.

406220288 is a deficient number, since it is larger than the sum of its proper divisors (405427912).

406220288 is an frugal number, since it uses more digits than its factorization.

406220288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793417 (or 793401 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 406220288 is about 20154.9072932624. The cubic root of 406220288 is about 740.6059609318.

The spelling of 406220288 in words is "four hundred six million, two hundred twenty thousand, two hundred eighty-eight".