402227680 has 96 divisors (see below), whose sum is σ = 1026043200. Its totient is φ = 148549632.

The previous prime is 402227677. The next prime is 402227689. The reversal of 402227680 is 86722204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402227689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104836 + ... + 108604.

It is an arithmetic number, because the mean of its divisors is an integer number (10687950).

Almost surely, 2^402227680 is an apocalyptic number.

402227680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402227680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513021600).

402227680 is an abundant number, since it is smaller than the sum of its proper divisors (623815520).

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

402227680 is a wasteful number, since it uses less digits than its factorization.

402227680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836 (or 3828 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 402227680 is about 20055.6146751976. The cubic root of 402227680 is about 738.1715755728.

Adding to 402227680 its reverse (86722204), we get a palindrome (488949884).

The spelling of 402227680 in words is "four hundred two million, two hundred twenty-seven thousand, six hundred eighty".