78248226 has 16 divisors (see below), whose sum is σ = 178853184. Its totient is φ = 22356624.

The previous prime is 78248221. The next prime is 78248237. The reversal of 78248226 is 62284287.

It is a super-2 number, since 2×78248226² = 12245569744294152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78248221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931485 + ... + 931568.

It is an arithmetic number, because the mean of its divisors is an integer number (11178324).

Almost surely, 2^78248226 is an apocalyptic number.

78248226 is an abundant number, since it is smaller than the sum of its proper divisors (100604958).

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

78248226 is a wasteful number, since it uses less digits than its factorization.

78248226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863065.

The product of its digits is 86016, while the sum is 39.

The square root of 78248226 is about 8845.8027335002. The cubic root of 78248226 is about 427.7186296637.

The spelling of 78248226 in words is "seventy-eight million, two hundred forty-eight thousand, two hundred twenty-six".