78225248 has 24 divisors (see below), whose sum is σ = 155035440. Its totient is φ = 38851200.

The previous prime is 78225233. The next prime is 78225293. The reversal of 78225248 is 84252287.

It is a happy number.

It is a super-2 number, since 2×78225248² = 12238378849323008, 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, 3263 + ... + 12926.

It is an arithmetic number, because the mean of its divisors is an integer number (6459810).

Almost surely, 2^78225248 is an apocalyptic number.

It is an amenable number.

78225248 is a deficient number, since it is larger than the sum of its proper divisors (76810192).

78225248 is a wasteful number, since it uses less digits than its factorization.

78225248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16350 (or 16342 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 78225248 is about 8844.5038300631. The cubic root of 78225248 is about 427.6767582954.

The spelling of 78225248 in words is "seventy-eight million, two hundred twenty-five thousand, two hundred forty-eight".