78057532 has 12 divisors (see below), whose sum is σ = 156115120. Its totient is φ = 33453216.

The previous prime is 78057527. The next prime is 78057533. The reversal of 78057532 is 23575087.

78057532 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 78057491 and 78057500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78057533) 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, 1393857 + ... + 1393912.

Almost surely, 2^78057532 is an apocalyptic number.

It is an amenable number.

78057532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78057532 is a wasteful number, since it uses less digits than its factorization.

78057532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787780 (or 2787778 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 78057532 is about 8835.0173740633. The cubic root of 78057532 is about 427.3708913267.

The spelling of 78057532 in words is "seventy-eight million, fifty-seven thousand, five hundred thirty-two".