71900169 has 16 divisors (see below), whose sum is σ = 104931264. Its totient is φ = 43430400.

The previous prime is 71900159. The next prime is 71900189. The reversal of 71900169 is 96100917.

It is not a de Polignac number, because 71900169 - 2⁵ = 71900137 is a prime.

It is a super-2 number, since 2×71900169² = 10339268604457122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (71900159) 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, 6849 + ... + 13809.

It is an arithmetic number, because the mean of its divisors is an integer number (6558204).

Almost surely, 2^71900169 is an apocalyptic number.

It is an amenable number.

71900169 is a deficient number, since it is larger than the sum of its proper divisors (33031095).

71900169 is a wasteful number, since it uses less digits than its factorization.

71900169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7288.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 71900169 is about 8479.3967356175. The cubic root of 71900169 is about 415.8244008168.

The spelling of 71900169 in words is "seventy-one million, nine hundred thousand, one hundred sixty-nine".