78467444 has 48 divisors (see below), whose sum is σ = 165545856. Its totient is φ = 32102400.

The previous prime is 78467443. The next prime is 78467449. The reversal of 78467444 is 44476487.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 78467395 and 78467404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78467443) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14924 + ... + 19484.

It is an arithmetic number, because the mean of its divisors is an integer number (3448872).

Almost surely, 2^78467444 is an apocalyptic number.

It is an amenable number.

78467444 is an abundant number, since it is smaller than the sum of its proper divisors (87078412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78467444 is a wasteful number, since it uses less digits than its factorization.

78467444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616 (or 4614 counting only the distinct ones).

The product of its digits is 602112, while the sum is 44.

The square root of 78467444 is about 8858.1851414384. The cubic root of 78467444 is about 428.1176853422.

The spelling of 78467444 in words is "seventy-eight million, four hundred sixty-seven thousand, four hundred forty-four".