78463732 has 12 divisors (see below), whose sum is σ = 137434276. Its totient is φ = 39196800.

The previous prime is 78463661. The next prime is 78463739. The reversal of 78463732 is 23736487.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1971216 + 76492516 = 1404^2 + 8746^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78463739) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3363 + ... + 12970.

Almost surely, 2^78463732 is an apocalyptic number.

It is an amenable number.

78463732 is a deficient number, since it is larger than the sum of its proper divisors (58970544).

78463732 is a wasteful number, since it uses less digits than its factorization.

78463732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17538 (or 17536 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 78463732 is about 8857.9756152295. The cubic root of 78463732 is about 428.1109343559.

It can be divided in two parts, 784 and 63732, that added together give a square (64516 = 254²).

The spelling of 78463732 in words is "seventy-eight million, four hundred sixty-three thousand, seven hundred thirty-two".