78504238 has 16 divisors (see below), whose sum is σ = 124554240. Its totient is φ = 37006200.

The previous prime is 78504211. The next prime is 78504253. The reversal of 78504238 is 83240587.

It is a super-3 number, since 3×78504238³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78504197 and 78504206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3123 + ... + 12913.

It is an arithmetic number, because the mean of its divisors is an integer number (7784640).

Almost surely, 2^78504238 is an apocalyptic number.

78504238 is a deficient number, since it is larger than the sum of its proper divisors (46050002).

78504238 is a wasteful number, since it uses less digits than its factorization.

78504238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10023.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 78504238 is about 8860.2617342830. The cubic root of 78504238 is about 428.1845907994.

The spelling of 78504238 in words is "seventy-eight million, five hundred four thousand, two hundred thirty-eight".