78284349 has 36 divisors (see below), whose sum is σ = 133604640. Its totient is φ = 43786080.

The previous prime is 78284347. The next prime is 78284357. The reversal of 78284349 is 94348287.

It is not a de Polignac number, because 78284349 - 2¹ = 78284347 is a prime.

It is a super-2 number, since 2×78284349² = 12256878596707602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78284347) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 14392 + ... + 19070.

It is an arithmetic number, because the mean of its divisors is an integer number (3711240).

Almost surely, 2^78284349 is an apocalyptic number.

It is an amenable number.

78284349 is a deficient number, since it is larger than the sum of its proper divisors (55320291).

78284349 is a wasteful number, since it uses less digits than its factorization.

78284349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722 (or 4706 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 78284349 is about 8847.8443137298. The cubic root of 78284349 is about 427.7844377717.

The spelling of 78284349 in words is "seventy-eight million, two hundred eighty-four thousand, three hundred forty-nine".