78382477 has 8 divisors (see below), whose sum is σ = 81027072. Its totient is φ = 75745200.

The previous prime is 78382453. The next prime is 78382487. The reversal of 78382477 is 77428387.

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 78382477 - 2¹¹ = 78380429 is a prime.

It is a super-2 number, since 2×78382477² = 12287625401311058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78382487) 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 7 ways as a sum of consecutive naturals, for example, 27828 + ... + 30514.

It is an arithmetic number, because the mean of its divisors is an integer number (10128384).

Almost surely, 2^78382477 is an apocalyptic number.

It is an amenable number.

78382477 is a deficient number, since it is larger than the sum of its proper divisors (2644595).

78382477 is a wasteful number, since it uses less digits than its factorization.

78382477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659.

The product of its digits is 526848, while the sum is 46.

The square root of 78382477 is about 8853.3878826131. The cubic root of 78382477 is about 427.9631031314.

The spelling of 78382477 in words is "seventy-eight million, three hundred eighty-two thousand, four hundred seventy-seven".