8221078 has 8 divisors (see below), whose sum is σ = 12371472. Its totient is φ = 4097256.

The previous prime is 8221069. The next prime is 8221111. The reversal of 8221078 is 8701228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8221078² = 135172246964168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5850 + ... + 7117.

It is an arithmetic number, because the mean of its divisors is an integer number (1546434).

Almost surely, 2^8221078 is an apocalyptic number.

8221078 is a deficient number, since it is larger than the sum of its proper divisors (4150394).

8221078 is a wasteful number, since it uses less digits than its factorization.

8221078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13286.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 8221078 is about 2867.2422290417. The cubic root of 8221078 is about 201.8256018527.

The spelling of 8221078 in words is "eight million, two hundred twenty-one thousand, seventy-eight".