78528542 has 8 divisors (see below), whose sum is σ = 124721856. Its totient is φ = 36954592.

The previous prime is 78528517. The next prime is 78528547. The reversal of 78528542 is 24582587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 78528542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78528547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154798 + ... + 1154865.

It is an arithmetic number, because the mean of its divisors is an integer number (15590232).

Almost surely, 2^78528542 is an apocalyptic number.

78528542 is a deficient number, since it is larger than the sum of its proper divisors (46193314).

78528542 is a wasteful number, since it uses less digits than its factorization.

78528542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309682.

The product of its digits is 179200, while the sum is 41.

The square root of 78528542 is about 8861.6331451939. The cubic root of 78528542 is about 428.2287732318.

The spelling of 78528542 in words is "seventy-eight million, five hundred twenty-eight thousand, five hundred forty-two".