71262980 has 24 divisors (see below), whose sum is σ = 158456088. Its totient is φ = 26828288.

The previous prime is 71262979. The next prime is 71263007. The reversal of 71262980 is 8926217.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31899904 + 39363076 = 5648^2 + 6274^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71262980.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104459 + ... + 105138.

It is an arithmetic number, because the mean of its divisors is an integer number (6602337).

Almost surely, 2^71262980 is an apocalyptic number.

It is an amenable number.

71262980 is an abundant number, since it is smaller than the sum of its proper divisors (87193108).

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

71262980 is a wasteful number, since it uses less digits than its factorization.

71262980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209623 (or 209621 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 71262980 is about 8441.7403418963. The cubic root of 71262980 is about 414.5923902188.

The spelling of 71262980 in words is "seventy-one million, two hundred sixty-two thousand, nine hundred eighty".