71910028 has 24 divisors (see below), whose sum is σ = 128520000. Its totient is φ = 35197008.

The previous prime is 71910011. The next prime is 71910101. The reversal of 71910028 is 82001917.

71910028 is a nontrivial binomial coefficient, being equal to C(11993, 2).

It is a junction number, because it is equal to n+sod(n) for n = 71909978 and 71910005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47223 + ... + 48721.

It is an arithmetic number, because the mean of its divisors is an integer number (5355000).

Almost surely, 2^71910028 is an apocalyptic number.

71910028 is the 11992-nd triangular number.

71910028 is the 3998-th centered nonagonal number.

It is an amenable number.

71910028 is a deficient number, since it is larger than the sum of its proper divisors (56609972).

71910028 is a wasteful number, since it uses less digits than its factorization.

71910028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1747 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 71910028 is about 8479.9780660094. The cubic root of 71910028 is about 415.8434059895.

It can be divided in two parts, 7 and 1910028, that added together give a triangular number (1910035 = T₁₉₅₄).

The spelling of 71910028 in words is "seventy-one million, nine hundred ten thousand, twenty-eight".