71489210 has 64 divisors (see below), whose sum is σ = 147813120. Its totient is φ = 24675840.

The previous prime is 71489183. The next prime is 71489213. The reversal of 71489210 is 1298417.

It is a super-2 number, since 2×71489210² = 10221414292848200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71489213) 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 31 ways as a sum of consecutive naturals, for example, 254270 + ... + 254550.

It is an arithmetic number, because the mean of its divisors is an integer number (2309580).

Almost surely, 2^71489210 is an apocalyptic number.

71489210 is an abundant number, since it is smaller than the sum of its proper divisors (76323910).

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

71489210 is a wasteful number, since it uses less digits than its factorization.

71489210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 71489210 is about 8455.1292124958. The cubic root of 71489210 is about 415.0306456297.

The spelling of 71489210 in words is "seventy-one million, four hundred eighty-nine thousand, two hundred ten".