78461588 has 24 divisors (see below), whose sum is σ = 142562280. Its totient is φ = 37739520.

The previous prime is 78461573. The next prime is 78461611. The reversal of 78461588 is 88516487.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1056784 + 77404804 = 1028^2 + 8798^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35228 + ... + 37388.

It is an arithmetic number, because the mean of its divisors is an integer number (5940095).

Almost surely, 2^78461588 is an apocalyptic number.

It is an amenable number.

78461588 is a deficient number, since it is larger than the sum of its proper divisors (64100692).

78461588 is a wasteful number, since it uses less digits than its factorization.

78461588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507 (or 2505 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The square root of 78461588 is about 8857.8545935232. The cubic root of 78461588 is about 428.1070349824.

The spelling of 78461588 in words is "seventy-eight million, four hundred sixty-one thousand, five hundred eighty-eight".