71752830 has 32 divisors (see below), whose sum is σ = 172564128. Its totient is φ = 19094400.

The previous prime is 71752823. The next prime is 71752843. The reversal of 71752830 is 3825717.

It is a super-2 number, since 2×71752830² = 10296937226017800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71752791 and 71752800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14020 + ... + 18440.

It is an arithmetic number, because the mean of its divisors is an integer number (5392629).

Almost surely, 2^71752830 is an apocalyptic number.

71752830 is an abundant number, since it is smaller than the sum of its proper divisors (100811298).

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

71752830 is a wasteful number, since it uses less digits than its factorization.

71752830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 71752830 is about 8470.7042210196. The cubic root of 71752830 is about 415.5401685271.

The spelling of 71752830 in words is "seventy-one million, seven hundred fifty-two thousand, eight hundred thirty".