78073222 has 8 divisors (see below), whose sum is σ = 117186696. Its totient is φ = 39010992.

The previous prime is 78073217. The next prime is 78073241. The reversal of 78073222 is 22237087.

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

It is a super-2 number, since 2×78073222² = 12190855986922568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8743 + ... + 15250.

It is an arithmetic number, because the mean of its divisors is an integer number (14648337).

Almost surely, 2^78073222 is an apocalyptic number.

78073222 is a deficient number, since it is larger than the sum of its proper divisors (39113474).

78073222 is a wasteful number, since it uses less digits than its factorization.

78073222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25622.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 78073222 is about 8835.9052733718. The cubic root of 78073222 is about 427.3995240539.

The spelling of 78073222 in words is "seventy-eight million, seventy-three thousand, two hundred twenty-two".