78382484 has 6 divisors (see below), whose sum is σ = 137169354. Its totient is φ = 39191240.

The previous prime is 78382453. The next prime is 78382487. The reversal of 78382484 is 48428387.

It can be written as a sum of positive squares in only one way, i.e., 77933584 + 448900 = 8828^2 + 670^2 .

It is a super-2 number, since 2×78382484² = 12287627596020512, which contains 22 as substring.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 9797807 + ... + 9797814.

It is an arithmetic number, because the mean of its divisors is an integer number (22861559).

Almost surely, 2^78382484 is an apocalyptic number.

It is an amenable number.

78382484 is a deficient number, since it is larger than the sum of its proper divisors (58786870).

78382484 is a wasteful number, since it uses less digits than its factorization.

78382484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19595625 (or 19595623 counting only the distinct ones).

The product of its digits is 344064, while the sum is 44.

The square root of 78382484 is about 8853.3882779420. The cubic root of 78382484 is about 427.9631158712.

The spelling of 78382484 in words is "seventy-eight million, three hundred eighty-two thousand, four hundred eighty-four".