71782948 has 12 divisors (see below), whose sum is σ = 125945820. Its totient is φ = 35798432.

The previous prime is 71782943. The next prime is 71782973. The reversal of 71782948 is 84928717.

It can be written as a sum of positive squares in 2 ways, for example, as 29246464 + 42536484 = 5408^2 + 6522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71782898 and 71782907.

It is not an unprimeable number, because it can be changed into a prime (71782943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21511 + ... + 24622.

It is an arithmetic number, because the mean of its divisors is an integer number (10495485).

Almost surely, 2^71782948 is an apocalyptic number.

It is an amenable number.

71782948 is a deficient number, since it is larger than the sum of its proper divisors (54162872).

71782948 is a wasteful number, since it uses less digits than its factorization.

71782948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46526 (or 46524 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The square root of 71782948 is about 8472.4818087736. The cubic root of 71782948 is about 415.5983009061.

The spelling of 71782948 in words is "seventy-one million, seven hundred eighty-two thousand, nine hundred forty-eight".