221896026 has 24 divisors (see below), whose sum is σ = 524481984. Its totient is φ = 67241160.

The previous prime is 221896013. The next prime is 221896033. The reversal of 221896026 is 620698122.

It is a happy number.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 560146 + ... + 560541.

It is an arithmetic number, because the mean of its divisors is an integer number (21853416).

Almost surely, 2^221896026 is an apocalyptic number.

221896026 is an abundant number, since it is smaller than the sum of its proper divisors (302585958).

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

221896026 is a wasteful number, since it uses less digits than its factorization.

221896026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120706 (or 1120703 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 221896026 is about 14896.1748781357. The cubic root of 221896026 is about 605.4103502110.

The spelling of 221896026 in words is "two hundred twenty-one million, eight hundred ninety-six thousand, twenty-six".