78544472 has 16 divisors (see below), whose sum is σ = 147818400. Its totient is φ = 39126240.

The previous prime is 78544469. The next prime is 78544493. The reversal of 78544472 is 27444587.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15947 + ... + 20282.

It is an arithmetic number, because the mean of its divisors is an integer number (9238650).

Almost surely, 2^78544472 is an apocalyptic number.

It is an amenable number.

78544472 is a deficient number, since it is larger than the sum of its proper divisors (69273928).

78544472 is a wasteful number, since it uses less digits than its factorization.

78544472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36506 (or 36502 counting only the distinct ones).

The product of its digits is 250880, while the sum is 41.

The square root of 78544472 is about 8862.5319181372. The cubic root of 78544472 is about 428.2577275583.

The spelling of 78544472 in words is "seventy-eight million, five hundred forty-four thousand, four hundred seventy-two".