78162222 has 32 divisors (see below), whose sum is σ = 164818944. Its totient is φ = 24674400.

The previous prime is 78162193. The next prime is 78162233. The reversal of 78162222 is 22226187.

It is a super-2 number, since 2×78162222² = 12218665895954568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78162222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4272 + ... + 13212.

It is an arithmetic number, because the mean of its divisors is an integer number (5150592).

Almost surely, 2^78162222 is an apocalyptic number.

78162222 is an abundant number, since it is smaller than the sum of its proper divisors (86656722).

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

78162222 is a wasteful number, since it uses less digits than its factorization.

78162222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9024.

The product of its digits is 5376, while the sum is 30.

The square root of 78162222 is about 8840.9401083821. The cubic root of 78162222 is about 427.5618678628.

The spelling of 78162222 in words is "seventy-eight million, one hundred sixty-two thousand, two hundred twenty-two".