78528486 has 16 divisors (see below), whose sum is σ = 163885824. Its totient is φ = 25038024.

The previous prime is 78528473. The next prime is 78528497. The reversal of 78528486 is 68482587.

It is a super-2 number, since 2×78528486² = 12333446226904392, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284386 + ... + 284661.

It is an arithmetic number, because the mean of its divisors is an integer number (10242864).

Almost surely, 2^78528486 is an apocalyptic number.

78528486 is an abundant number, since it is smaller than the sum of its proper divisors (85357338).

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

78528486 is a wasteful number, since it uses less digits than its factorization.

78528486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569075.

The product of its digits is 860160, while the sum is 48.

The square root of 78528486 is about 8861.6299855049. The cubic root of 78528486 is about 428.2286714394.

The spelling of 78528486 in words is "seventy-eight million, five hundred twenty-eight thousand, four hundred eighty-six".