402840226 has 16 divisors (see below), whose sum is σ = 632544768. Its totient is φ = 192175200.

The previous prime is 402840203. The next prime is 402840241. The reversal of 402840226 is 622048204.

It is a junction number, because it is equal to n+sod(n) for n = 402840194 and 402840203.

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, 41355 + ... + 50158.

It is an arithmetic number, because the mean of its divisors is an integer number (39534048).

Almost surely, 2^402840226 is an apocalyptic number.

402840226 is a deficient number, since it is larger than the sum of its proper divisors (229704542).

402840226 is a wasteful number, since it uses less digits than its factorization.

402840226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91617.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 402840226 is about 20070.8800504612. The cubic root of 402840226 is about 738.5461020175.

The spelling of 402840226 in words is "four hundred two million, eight hundred forty thousand, two hundred twenty-six".