71394090 has 32 divisors (see below), whose sum is σ = 175979520. Its totient is φ = 18523584.

The previous prime is 71394049. The next prime is 71394091. The reversal of 71394090 is 9049317.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71394091) 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, 31050 + ... + 33269.

It is an arithmetic number, because the mean of its divisors is an integer number (5499360).

Almost surely, 2^71394090 is an apocalyptic number.

71394090 is an abundant number, since it is smaller than the sum of its proper divisors (104585430).

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

71394090 is a wasteful number, since it uses less digits than its factorization.

71394090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64366.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 71394090 is about 8449.5023522099. The cubic root of 71394090 is about 414.8464908601.

The spelling of 71394090 in words is "seventy-one million, three hundred ninety-four thousand, ninety".