71272149 has 16 divisors (see below), whose sum is σ = 102535104. Its totient is φ = 43776000.

The previous prime is 71272133. The next prime is 71272171. The reversal of 71272149 is 94127217.

It is not a de Polignac number, because 71272149 - 2⁴ = 71272133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71272549) 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, 23574 + ... + 26424.

It is an arithmetic number, because the mean of its divisors is an integer number (6408444).

Almost surely, 2^71272149 is an apocalyptic number.

It is an amenable number.

71272149 is a deficient number, since it is larger than the sum of its proper divisors (31262955).

71272149 is a wasteful number, since it uses less digits than its factorization.

71272149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508.

The product of its digits is 7056, while the sum is 33.

The square root of 71272149 is about 8442.2833996496. The cubic root of 71272149 is about 414.6101705333.

The spelling of 71272149 in words is "seventy-one million, two hundred seventy-two thousand, one hundred forty-nine".