78382071 has 24 divisors (see below), whose sum is σ = 116986896. Its totient is φ = 50544000.

The previous prime is 78382061. The next prime is 78382081. The reversal of 78382071 is 17028387.

It is an interprime number because it is at equal distance from previous prime (78382061) and next prime (78382081).

It is not a de Polignac number, because 78382071 - 2⁵ = 78382039 is a prime.

It is a super-2 number, since 2×78382071² = 12287498108498082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78382061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33696 + ... + 35946.

It is an arithmetic number, because the mean of its divisors is an integer number (4874454).

Almost surely, 2^78382071 is an apocalyptic number.

78382071 is a deficient number, since it is larger than the sum of its proper divisors (38604825).

78382071 is a wasteful number, since it uses less digits than its factorization.

78382071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383 (or 2380 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 78382071 is about 8853.3649535078. The cubic root of 78382071 is about 427.9623642191.

The spelling of 78382071 in words is "seventy-eight million, three hundred eighty-two thousand, seventy-one".