78227022 has 16 divisors (see below), whose sum is σ = 156552912. Its totient is φ = 26059200.

The previous prime is 78227003. The next prime is 78227029. The reversal of 78227022 is 22072287.

It is a super-2 number, since 2×78227022² = 12238933941976968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78227029) 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, 9772 + ... + 15872.

It is an arithmetic number, because the mean of its divisors is an integer number (9784557).

Almost surely, 2^78227022 is an apocalyptic number.

78227022 is an abundant number, since it is smaller than the sum of its proper divisors (78325890).

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

78227022 is a wasteful number, since it uses less digits than its factorization.

78227022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8243.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 78227022 is about 8844.6041177658. The cubic root of 78227022 is about 427.6799912364.

The spelling of 78227022 in words is "seventy-eight million, two hundred twenty-seven thousand, twenty-two".