80711730 has 48 divisors (see below), whose sum is σ = 228930624. Its totient is φ = 19566240.

The previous prime is 80711711. The next prime is 80711749. The reversal of 80711730 is 3711708.

It is an interprime number because it is at equal distance from previous prime (80711711) and next prime (80711749).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80711694 and 80711703.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39774 + ... + 41753.

It is an arithmetic number, because the mean of its divisors is an integer number (4769388).

Almost surely, 2^80711730 is an apocalyptic number.

80711730 is an abundant number, since it is smaller than the sum of its proper divisors (148218894).

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

80711730 is a wasteful number, since it uses less digits than its factorization.

80711730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81551 (or 81548 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 80711730 is about 8983.9707256869. The cubic root of 80711730 is about 432.1609803855.

It can be divided in two parts, 8071 and 1730, that added together give a square (9801 = 99²).

The spelling of 80711730 in words is "eighty million, seven hundred eleven thousand, seven hundred thirty".