81174848 has 14 divisors (see below), whose sum is σ = 161081466. Its totient is φ = 40587392.

The previous prime is 81174827. The next prime is 81174869. The reversal of 81174848 is 84847118.

It is an interprime number because it is at equal distance from previous prime (81174827) and next prime (81174869).

It can be written as a sum of positive squares in only one way, i.e., 54878464 + 26296384 = 7408^2 + 5128^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634115 + ... + 634242.

It is an arithmetic number, because the mean of its divisors is an integer number (11505819).

Almost surely, 2^81174848 is an apocalyptic number.

It is an amenable number.

81174848 is a deficient number, since it is larger than the sum of its proper divisors (79906618).

81174848 is a wasteful number, since it uses less digits than its factorization.

81174848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268369 (or 1268359 counting only the distinct ones).

The product of its digits is 57344, while the sum is 41.

The square root of 81174848 is about 9009.7085413458. The cubic root of 81174848 is about 432.9859738339.

The spelling of 81174848 in words is "eighty-one million, one hundred seventy-four thousand, eight hundred forty-eight".