402222528 has 168 divisors, whose sum is σ = 1219309728. Its totient is φ = 126517248.

The previous prime is 402222503. The next prime is 402222577. The reversal of 402222528 is 825222204.

402222528 is a `hidden beast` number, since 402 + 2 + 2 + 252 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1284900 + ... + 1285212.

It is an arithmetic number, because the mean of its divisors is an integer number (7257796).

Almost surely, 2^402222528 is an apocalyptic number.

402222528 is a gapful number since it is divisible by the number (48) 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 402222528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609654864).

402222528 is an abundant number, since it is smaller than the sum of its proper divisors (817087200).

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

402222528 is a wasteful number, since it uses less digits than its factorization.

402222528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 402222528 is about 20055.4862319516. The cubic root of 402222528 is about 738.1684238950.

The spelling of 402222528 in words is "four hundred two million, two hundred twenty-two thousand, five hundred twenty-eight".