71408930 has 16 divisors (see below), whose sum is σ = 128685240. Its totient is φ = 28530432.

The previous prime is 71408917. The next prime is 71408963. The reversal of 71408930 is 3980417.

It can be written as a sum of positive squares in 4 ways, for example, as 67749361 + 3659569 = 8231^2 + 1913^2 .

It is a Curzon number.

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, 6116 + ... + 13424.

Almost surely, 2^71408930 is an apocalyptic number.

71408930 is a deficient number, since it is larger than the sum of its proper divisors (57276310).

71408930 is a wasteful number, since it uses less digits than its factorization.

71408930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8293.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 71408930 is about 8450.3804648075. The cubic root of 71408930 is about 414.8752322466.

The spelling of 71408930 in words is "seventy-one million, four hundred eight thousand, nine hundred thirty".