71418890 has 8 divisors (see below), whose sum is σ = 128554020. Its totient is φ = 28567552.

The previous prime is 71418883. The next prime is 71418901. The reversal of 71418890 is 9881417.

It can be written as a sum of positive squares in 2 ways, for example, as 71351809 + 67081 = 8447^2 + 259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3570935 + ... + 3570954.

Almost surely, 2^71418890 is an apocalyptic number.

71418890 is a deficient number, since it is larger than the sum of its proper divisors (57135130).

71418890 is a wasteful number, since it uses less digits than its factorization.

71418890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7141896.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 71418890 is about 8450.9697668374. The cubic root of 71418890 is about 414.8945200547.

The spelling of 71418890 in words is "seventy-one million, four hundred eighteen thousand, eight hundred ninety".