71682730 has 32 divisors (see below), whose sum is σ = 148936320. Its totient is φ = 24331200.

The previous prime is 71682713. The next prime is 71682731. The reversal of 71682730 is 3728617.

It is not an unprimeable number, because it can be changed into a prime (71682731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2001 + ... + 12139.

It is an arithmetic number, because the mean of its divisors is an integer number (4654260).

Almost surely, 2^71682730 is an apocalyptic number.

71682730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71682730 is an abundant number, since it is smaller than the sum of its proper divisors (77253590).

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

71682730 is a wasteful number, since it uses less digits than its factorization.

71682730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10254.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 71682730 is about 8466.5654193421. The cubic root of 71682730 is about 415.4048017080.

The spelling of 71682730 in words is "seventy-one million, six hundred eighty-two thousand, seven hundred thirty".