71672286 has 16 divisors (see below), whose sum is σ = 163822464. Its totient is φ = 20477784.

The previous prime is 71672281. The next prime is 71672317. The reversal of 71672286 is 68227617.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71672281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853200 + ... + 853283.

It is an arithmetic number, because the mean of its divisors is an integer number (10238904).

Almost surely, 2^71672286 is an apocalyptic number.

71672286 is an abundant number, since it is smaller than the sum of its proper divisors (92150178).

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

71672286 is a wasteful number, since it uses less digits than its factorization.

71672286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706495.

The product of its digits is 56448, while the sum is 39.

The square root of 71672286 is about 8465.9486178455. The cubic root of 71672286 is about 415.3846262372.

It can be divided in two parts, 7167 and 2286, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 71672286 in words is "seventy-one million, six hundred seventy-two thousand, two hundred eighty-six".