78384922 has 32 divisors (see below), whose sum is σ = 149091840. Its totient is φ = 30018480.

The previous prime is 78384893. The next prime is 78384931. The reversal of 78384922 is 22948387.

It is a happy number.

It is a super-2 number, since 2×78384922² = 12288391993892168, which contains 22 as substring.

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, 4773 + ... + 13399.

It is an arithmetic number, because the mean of its divisors is an integer number (4659120).

Almost surely, 2^78384922 is an apocalyptic number.

78384922 is a deficient number, since it is larger than the sum of its proper divisors (70706918).

78384922 is a wasteful number, since it uses less digits than its factorization.

78384922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8706.

The product of its digits is 193536, while the sum is 43.

The square root of 78384922 is about 8853.5259642698. The cubic root of 78384922 is about 427.9675529308.

The spelling of 78384922 in words is "seventy-eight million, three hundred eighty-four thousand, nine hundred twenty-two".