71283406 has 4 divisors (see below), whose sum is σ = 106925112. Its totient is φ = 35641702.

The previous prime is 71283403. The next prime is 71283409. The reversal of 71283406 is 60438217.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (71283403) and next prime (71283409).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71283403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17820850 + ... + 17820853.

It is an arithmetic number, because the mean of its divisors is an integer number (26731278).

Almost surely, 2^71283406 is an apocalyptic number.

71283406 is a deficient number, since it is larger than the sum of its proper divisors (35641706).

71283406 is a wasteful number, since it uses less digits than its factorization.

71283406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35641705.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 71283406 is about 8442.9500768393. The cubic root of 71283406 is about 414.6319977644.

The spelling of 71283406 in words is "seventy-one million, two hundred eighty-three thousand, four hundred six".