78353612 has 24 divisors (see below), whose sum is σ = 147238560. Its totient is φ = 36350720.

The previous prime is 78353609. The next prime is 78353623. The reversal of 78353612 is 21635387.

It is a super-2 number, since 2×78353612² = 12278577026893088, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3287 + ... + 12942.

It is an arithmetic number, because the mean of its divisors is an integer number (6134940).

Almost surely, 2^78353612 is an apocalyptic number.

It is an amenable number.

78353612 is a deficient number, since it is larger than the sum of its proper divisors (68884948).

78353612 is a wasteful number, since it uses less digits than its factorization.

78353612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16321 (or 16319 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 78353612 is about 8851.7575655911. The cubic root of 78353612 is about 427.9105630223.

Adding to 78353612 its reverse (21635387), we get a palindrome (99988999).

The spelling of 78353612 in words is "seventy-eight million, three hundred fifty-three thousand, six hundred twelve".