78432087 has 8 divisors (see below), whose sum is σ = 104820480. Its totient is φ = 52165880.

The previous prime is 78432083. The next prime is 78432091. The reversal of 78432087 is 78023487.

It is an interprime number because it is at equal distance from previous prime (78432083) and next prime (78432091).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78432087 - 2² = 78432083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78432083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29037 + ... + 31622.

It is an arithmetic number, because the mean of its divisors is an integer number (13102560).

Almost surely, 2^78432087 is an apocalyptic number.

78432087 is a deficient number, since it is larger than the sum of its proper divisors (26388393).

78432087 is a wasteful number, since it uses less digits than its factorization.

78432087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61093.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 78432087 is about 8856.1891917461. The cubic root of 78432087 is about 428.0533731878.

The spelling of 78432087 in words is "seventy-eight million, four hundred thirty-two thousand, eighty-seven".