78223342 has 16 divisors (see below), whose sum is σ = 123926400. Its totient is φ = 36928440.

The previous prime is 78223339. The next prime is 78223349. The reversal of 78223342 is 24332287.

It is a super-2 number, since 2×78223342² = 12237782467297928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78223349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8509 + ... + 15127.

It is an arithmetic number, because the mean of its divisors is an integer number (7745400).

Almost surely, 2^78223342 is an apocalyptic number.

78223342 is a deficient number, since it is larger than the sum of its proper divisors (45703058).

78223342 is a wasteful number, since it uses less digits than its factorization.

78223342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951.

The product of its digits is 16128, while the sum is 31.

The square root of 78223342 is about 8844.3960788739. The cubic root of 78223342 is about 427.6732847429.

The spelling of 78223342 in words is "seventy-eight million, two hundred twenty-three thousand, three hundred forty-two".