78563040 has 48 divisors (see below), whose sum is σ = 247475088. Its totient is φ = 20950016.

The previous prime is 78563033. The next prime is 78563053. The reversal of 78563040 is 4036587.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 78562992 and 78563010.

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 7 ways as a sum of consecutive naturals, for example, 81357 + ... + 82316.

It is an arithmetic number, because the mean of its divisors is an integer number (5155731).

Almost surely, 2^78563040 is an apocalyptic number.

It is an amenable number.

78563040 is an abundant number, since it is smaller than the sum of its proper divisors (168912048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78563040 is a wasteful number, since it uses less digits than its factorization.

78563040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163691 (or 163683 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 78563040 is about 8863.5794124044. The cubic root of 78563040 is about 428.2914717661.

The spelling of 78563040 in words is "seventy-eight million, five hundred sixty-three thousand, forty".