71425890 has 24 divisors (see below), whose sum is σ = 185707548. Its totient is φ = 19046880.

The previous prime is 71425889. The next prime is 71425897. The reversal of 71425890 is 9852417.

71425890 is a `hidden beast` number, since 71 + 4 + 2 + 589 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 66048129 + 5377761 = 8127^2 + 2319^2 .

It is not an unprimeable number, because it can be changed into a prime (71425897) 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 11 ways as a sum of consecutive naturals, for example, 396721 + ... + 396900.

Almost surely, 2^71425890 is an apocalyptic number.

71425890 is an abundant number, since it is smaller than the sum of its proper divisors (114281658).

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

71425890 is a wasteful number, since it uses less digits than its factorization.

71425890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793634 (or 793631 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 71425890 is about 8451.3839103427. The cubic root of 71425890 is about 414.9080746701.

The spelling of 71425890 in words is "seventy-one million, four hundred twenty-five thousand, eight hundred ninety".