78284348 has 6 divisors (see below), whose sum is σ = 136997616. Its totient is φ = 39142172.

The previous prime is 78284347. The next prime is 78284357. The reversal of 78284348 is 84348287.

It is a super-2 number, since 2×78284348² = 12256878283570208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78284299 and 78284308.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 9785540 + ... + 9785547.

It is an arithmetic number, because the mean of its divisors is an integer number (22832936).

Almost surely, 2^78284348 is an apocalyptic number.

It is an amenable number.

78284348 is a deficient number, since it is larger than the sum of its proper divisors (58713268).

78284348 is a wasteful number, since it uses less digits than its factorization.

78284348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19571091 (or 19571089 counting only the distinct ones).

The product of its digits is 344064, while the sum is 44.

The square root of 78284348 is about 8847.8442572188. The cubic root of 78284348 is about 427.7844359502.

The spelling of 78284348 in words is "seventy-eight million, two hundred eighty-four thousand, three hundred forty-eight".