71628726 has 32 divisors (see below), whose sum is σ = 154748160. Its totient is φ = 21972384.

The previous prime is 71628721. The next prime is 71628743. The reversal of 71628726 is 62782617.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71628721) 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, 28351 + ... + 30773.

It is an arithmetic number, because the mean of its divisors is an integer number (4835880).

Almost surely, 2^71628726 is an apocalyptic number.

71628726 is an abundant number, since it is smaller than the sum of its proper divisors (83119434).

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

71628726 is a wasteful number, since it uses less digits than its factorization.

71628726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820.

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

The square root of 71628726 is about 8463.3755677035. The cubic root of 71628726 is about 415.3004569242.

The spelling of 71628726 in words is "seventy-one million, six hundred twenty-eight thousand, seven hundred twenty-six".