78762438 has 12 divisors (see below), whose sum is σ = 170651988. Its totient is φ = 26254140.

The previous prime is 78762433. The next prime is 78762473. The reversal of 78762438 is 83426787.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78762393 and 78762402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78762433) 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 5 ways as a sum of consecutive naturals, for example, 2187828 + ... + 2187863.

It is an arithmetic number, because the mean of its divisors is an integer number (14220999).

Almost surely, 2^78762438 is an apocalyptic number.

78762438 is an abundant number, since it is smaller than the sum of its proper divisors (91889550).

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

78762438 is a wasteful number, since it uses less digits than its factorization.

78762438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375699 (or 4375696 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 78762438 is about 8874.8204488880. The cubic root of 78762438 is about 428.6535093264.

The spelling of 78762438 in words is "seventy-eight million, seven hundred sixty-two thousand, four hundred thirty-eight".