72847446 has 16 divisors (see below), whose sum is σ = 166508544. Its totient is φ = 20813544.

The previous prime is 72847429. The next prime is 72847459. The reversal of 72847446 is 64474827.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1734463 = 72847446 / (7 + 2 + 8 + 4 + 7 + 4 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 72847398 and 72847407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867190 + ... + 867273.

It is an arithmetic number, because the mean of its divisors is an integer number (10406784).

Almost surely, 2^72847446 is an apocalyptic number.

72847446 is an abundant number, since it is smaller than the sum of its proper divisors (93661098).

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

72847446 is a wasteful number, since it uses less digits than its factorization.

72847446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734475.

The product of its digits is 301056, while the sum is 42.

The square root of 72847446 is about 8535.0715286985. The cubic root of 72847446 is about 417.6425865063.

The spelling of 72847446 in words is "seventy-two million, eight hundred forty-seven thousand, four hundred forty-six".